spelling fixes (#18688)

* Fixes spelling of "Allow to" to "Allow one to"

and those variants:
Allows to -> Allows one to
allow to -> allow one to
allows to -> allows one to

* Fix "Let's -> Lets"

(and lower case variant.)

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Update src/3rdParty/salomesmesh/inc/MED_Wrapper.hxx

Co-authored-by: Chris Hennes <chennes@pioneerlibrarysystem.org>

* Update src/Base/PyObjectBase.cpp
Update src/App/ExtensionContainer.h
Update src/App/PropertyContainer.h

Co-authored-by: Chris Hennes <chennes@pioneerlibrarysystem.org>

* Use gerund in user-facing texts.

* Use gerund for two more user-facing strings.

Co-authored-by: Chris Hennes <chennes@pioneerlibrarysystem.org>

* Update src/Mod/Fem/App/FemMeshShapeNetgenObject.cpp

Co-authored-by: Chris Hennes <chennes@pioneerlibrarysystem.org>

* Update src/Mod/Fem/App/FemMeshShapeNetgenObject.cpp

Co-authored-by: Chris Hennes <chennes@pioneerlibrarysystem.org>

* Update src/Mod/Fem/App/FemMeshShapeNetgenObject.cpp

Co-authored-by: Chris Hennes <chennes@pioneerlibrarysystem.org>

---------

Co-authored-by: Tobias Frost <tobi@debian.org>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Chris Hennes <chennes@pioneerlibrarysystem.org>

src/Mod/Mesh/App/AppMesh.cpp

@@ -74,7 +74,7 @@ PyMOD_INIT_FUNC(Mesh)
 
     Mesh::Extension3MFFactory::addProducer(new Mesh::GuiExtension3MFProducer);
 
-    // This registration is sufficient to allow to measure free distances with a mesh
+    // This registration is sufficient to allow one to measure free distances with a mesh
     App::MeasureManager::addMeasureHandler("Mesh", [](App::DocumentObject*, const char*) {
         return App::MeasureElementType::INVALID;
     });