Fix various typos

Found via `codespell -q 3 -L aci,ake,aline,alle,alledges,alocation,als,ang,anid,apoints,ba,beginn,behaviour,bloaded,bottome,byteorder,calculater,cancelled,cancelling,cas,cascade,centimetre,childs,colour,colours,commen,connexion,currenty,dof,doubleclick,dum,eiter,elemente,ende,feld,finde,findf,freez,hist,iff,indicies,initialisation,initialise,initialised,initialises,initialisiert,inout,ist,kilometre,lod,mantatory,methode,metres,millimetre,modell,nd,noe,normale,normaly,nto,numer,oder,ontop,orgin,orginx,orginy,ot,pard,parms,pres,programm,que,recurrance,rougly,seperator,serie,sinc,strack,substraction,te,thist,thru,tread,uint,unter,vertexes,wallthickness,whitespaces -S ./.git,*.po,*.ts,./ChangeLog.txt,./src/3rdParty,./src/Mod/Assembly/App/opendcm,./src/CXX,./src/zipios++,./src/Base/swig*,./src/Mod/Robot/App/kdl_cp,./src/Mod/Import/App/SCL,./src/WindowsInstaller,./src/Doc/FreeCAD.uml,./build/doc/SourceDocu`

BUILD_OSX.md

@@ -7,7 +7,7 @@
   - [Install Xcode Command line tools](#install-xcode-cli-tools)
   - [Install Conda](#install-conda)
   - [Run the shell script](#run-the-shell-script)
-- [Building FreeCAD on macOS using homebrew packages with & without formual file](#homebrew-build-fc-on-macos)
+- [Building FreeCAD on macOS using homebrew packages with & without formula file](#homebrew-build-fc-on-macos)
 - [Requirements](#homebrew-requirements)
   - [Install required FreeCAD dependencies](#homebrew-install-required-deps)
 - [Limitations of using freecad formula file](#homebrew-limits-of-formula-file)

src/Mod/Fem/femsolver/settings.py

@@ -195,7 +195,7 @@ class _SolverDlg(object):
 
         # set the binary path to the FreeCAD defaults
         # ATM pure unix shell commands without path names are used as standard
-        # TODO the binaries provieded with the FreeCAD distribution should be found
+        # TODO the binaries provided with the FreeCAD distribution should be found
         # without any additional user input
         # see ccxttols, it works for Windows and Linux there
         binary = self.default

src/Mod/Sketcher/Gui/ViewProviderSketch.cpp

@@ -4429,7 +4429,7 @@ void ViewProviderSketch::draw(bool temp /*=false*/, bool rebuildinformationlayer
 
             SoSeparator *sep = new SoSeparator();
             sep->ref();
-            // no caching for fluctuand data structures
+            // no caching for fluctuant data structures
             sep->renderCaching = SoSeparator::OFF;
 
             // every information visual node gets its own material for to-be-implemented preselection and selection
@@ -4482,7 +4482,7 @@ void ViewProviderSketch::draw(bool temp /*=false*/, bool rebuildinformationlayer
 
             SoSeparator *sep = new SoSeparator();
             sep->ref();
-            // no caching for fluctuand data structures
+            // no caching for fluctuant data structures
             sep->renderCaching = SoSeparator::OFF;
 
             // every information visual node gets its own material for to-be-implemented preselection and selection
@@ -4612,7 +4612,7 @@ void ViewProviderSketch::draw(bool temp /*=false*/, bool rebuildinformationlayer
 
             SoSeparator *sep = new SoSeparator();
             sep->ref();
-            // no caching for fluctuand data structures
+            // no caching for fluctuant data structures
             sep->renderCaching = SoSeparator::OFF;
 
             // every information visual node gets its own material for to-be-implemented preselection and selection
@@ -4706,7 +4706,7 @@ void ViewProviderSketch::draw(bool temp /*=false*/, bool rebuildinformationlayer
 
                 SoSeparator *sep = new SoSeparator();
                 sep->ref();
-                // no caching for fluctuand data structures
+                // no caching for fluctuant data structures
                 sep->renderCaching = SoSeparator::OFF;
 
                 // every information visual node gets its own material for to-be-implemented preselection and selection
@@ -4775,7 +4775,7 @@ void ViewProviderSketch::draw(bool temp /*=false*/, bool rebuildinformationlayer
 
                 SoSeparator* sep = new SoSeparator();
                 sep->ref();
-                // no caching for fluctuand data structures
+                // no caching for fluctuant data structures
                 sep->renderCaching = SoSeparator::OFF;
 
                 // every information visual node gets its own material for to-be-implemented preselection and selection
@@ -5970,7 +5970,7 @@ void ViewProviderSketch::rebuildConstraintsVisual(void)
         // root separator for one constraint
         SoSeparator *sep = new SoSeparator();
         sep->ref();
-        // no caching for fluctuand data structures
+        // no caching for fluctuant data structures
         sep->renderCaching = SoSeparator::OFF;
 
         // every constrained visual node gets its own material for preselection and selection
@@ -6808,7 +6808,7 @@ void ViewProviderSketch::createEditInventorNodes(void)
     ps->style.setValue(SoPickStyle::UNPICKABLE);
     Coordsep->addChild(ps);
     Coordsep->setName("CoordSeparator");
-    // no caching for fluctuand data structures
+    // no caching for fluctuant data structures
     Coordsep->renderCaching = SoSeparator::OFF;
 
     SoMaterial *CoordTextMaterials = new SoMaterial;

src/Mod/Surface/Gui/TaskFilling.cpp

@@ -548,7 +548,7 @@ void FillingPanel::on_listBoundary_itemDoubleClicked(QListWidgetItem* item)
                         ui->comboBoxFaces->addItem(text, text.toLatin1());
                     }
 
-                    // activste face and continuity
+                    // activate face and continuity
                     if (data.size() == 5) {
                         int index = ui->comboBoxFaces->findData(data[3]);
                         ui->comboBoxFaces->setCurrentIndex(index);