Fix typos

Found via `codespell -q 3 -I ../fc-word-whitelist.txt -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/Mod/TechDraw/Gui/TaskCenterLine.cpp

@@ -134,7 +134,7 @@ TaskCenterLine::TaskCenterLine(TechDraw::DrawViewPart* partFeat,
     } else if (geomType == "Vertex") {
         m_type = 2;
     } else {
-        Base::Console().Error("TaskCenterLine - unknow geometry type: %s.  Can not proceed.\n", geomType.c_str());
+        Base::Console().Error("TaskCenterLine - unknown geometry type: %s.  Can not proceed.\n", geomType.c_str());
         return;
     }
     setUiPrimary();