Cleanup: spelling

Also correct own correction from 58b8724a48
thanks @mont29 for raising this.

source/blender/blenloader/intern/readfile.c

@@ -5487,7 +5487,7 @@ static void direct_link_windowmanager(BlendDataReader *reader, wmWindowManager *
     if (win->workspace_hook != NULL) {
       /* We need to restore a pointer to this later when reading workspaces,
        * so store in global oldnew-map.
-       * Note that this is only needed for versionning of older .blend files now.. */
+       * Note that this is only needed for versioning of older .blend files now.. */
       oldnewmap_insert(reader->fd->globmap, hook, win->workspace_hook, 0);
       /* Cleanup pointers to data outside of this data-block scope. */
       win->workspace_hook->act_layout = NULL;

source/blender/draw/engines/overlay/overlay_sculpt.c

@@ -61,8 +61,8 @@ void OVERLAY_sculpt_cache_populate(OVERLAY_Data *vedata, Object *ob)
   }
 
   if (!pbvh_has_mask(pbvh) && !pbvh_has_face_sets(pbvh)) {
-    /* The SculptSession and the PBVH can be created without a Mask datalayer or Face Set
-     * datalayer. (masks datalayers are created after using a mask tool), so in these cases there
+    /* The SculptSession and the PBVH can be created without a Mask data-layer or Face Set
+     * data-layer. (masks data-layers are created after using a mask tool), so in these cases there
      * is nothing to draw. */
     return;
   }

source/blender/makesrna/intern/rna_access_compare_override.c

@@ -916,7 +916,7 @@ static void rna_property_override_apply_ex(Main *bmain,
           /* This is rather fragile, but the fact that local override IDs may have a different name
            * than their linked reference makes it necessary.
            * Basically, here we are considering that if we cannot find the original linked ID in
-           * the local override we are (re-)applying the operations, then it may be because of
+           * the local override we are (re-)applying the operations, then it may be because some of
            * those operations have already been applied, and we may already have the local ID
            * pointer we want to set.
            * This happens e.g. during re-sync of an override, since we have already remapped all ID