UI: fix and improve a few messages

- "can not" -> "cannot" in many places (ambiguous, also see
  Writing Style guide).
- "Bezier" -> "Bézier": proper spelling of the eponym.
- Tool keymaps: make "Uv" all caps.
- "FFMPEG" -> "FFmpeg" (official spelling)
- Use MULTIPLICATION SIGN U+00D7 instead of MULTIPLICATION X U+2715.
- "LClick" -> "LMB", "RClick" -> "RMB": this convention is used
  everywhere else.
- "Save rendered the image..." -> "Save the rendered image...": typo.
- "Preserve Current retiming": title case for property.
- Bend status message: punctuation.
- "... class used to define the panel" -> "header": copy-paste error.
- "... class used to define the menu" -> "asset": copy-paste error.
- "Lights user to display objects..." -> "Lights used...": typo.
- "-setaudio require one argument" -> "requires": typo.

Some issues reported by Joan Pujolar and Tamar Mebonia.

Pull Request: https://projects.blender.org/blender/blender/pulls/117856

doc/python_api/examples/bpy.types.Depsgraph.4.py

@@ -19,7 +19,7 @@ When is used on evaluated object all modifiers are taken into account.
 
 .. note:: The result mesh is owned by the object. It can be freed by calling `object.to_mesh_clear()`.
 .. note::
-   The result mesh must be treated as temporary, and can not be referenced from objects in the main
+   The result mesh must be treated as temporary, and cannot be referenced from objects in the main
    database. If the mesh intended to be used in a persistent manner use bpy.data.meshes.new_from_object()
    instead.
 .. note:: If object does not have geometry (i.e. camera) the functions returns None.
@@ -40,7 +40,7 @@ class OBJECT_OT_object_to_mesh(bpy.types.Operator):
             return {'CANCELLED'}
         # Avoid annoying None checks later on.
         if obj.type not in {'MESH', 'CURVE', 'SURFACE', 'FONT', 'META'}:
-            self.report({'INFO'}, "Object can not be converted to mesh")
+            self.report({'INFO'}, "Object cannot be converted to mesh")
             return {'CANCELLED'}
         depsgraph = context.evaluated_depsgraph_get()
         # Invoke to_mesh() for original object.

doc/python_api/examples/bpy.types.Depsgraph.5.py

@@ -36,7 +36,7 @@ class OBJECT_OT_mesh_from_object(bpy.types.Operator):
             return {'CANCELLED'}
         # Avoid annoying None checks later on.
         if obj.type not in {'MESH', 'CURVE', 'SURFACE', 'FONT', 'META'}:
-            self.report({'INFO'}, "Object can not be converted to mesh")
+            self.report({'INFO'}, "Object cannot be converted to mesh")
             return {'CANCELLED'}
         depsgraph = context.evaluated_depsgraph_get()
         object_eval = obj.evaluated_get(depsgraph)

doc/python_api/examples/bpy.types.Depsgraph.7.py

@@ -17,7 +17,7 @@ a text object, an error will be reported.
 
 .. note:: The resulting curve is owned by the object. It can be freed by calling `object.to_curve_clear()`.
 .. note::
-   The resulting curve must be treated as temporary, and can not be referenced from objects in the main
+   The resulting curve must be treated as temporary, and cannot be referenced from objects in the main
    database.
 """
 import bpy
@@ -35,7 +35,7 @@ class OBJECT_OT_object_to_curve(bpy.types.Operator):
             self.report({'INFO'}, "No active object to convert to curve")
             return {'CANCELLED'}
         if obj.type not in {'CURVE', 'FONT'}:
-            self.report({'INFO'}, "Object can not be converted to curve")
+            self.report({'INFO'}, "Object cannot be converted to curve")
             return {'CANCELLED'}
         depsgraph = context.evaluated_depsgraph_get()
         # Invoke to_curve() without applying modifiers.