fix grammar and spelling

please include in the release branch
(cherry picked from commit ba6a8eb5dd)

pkgs/gui-pkgs/gui-doc/scribblings/gui/area-container-intf.scrbl

@@ -56,7 +56,7 @@ Suspends geometry management in the container's top-level window
  delays show and hide actions by
 @method[area-container<%> change-children], as well as the on-screen part of showing via
 @method[window<%> show] until the sequence is complete.  Sequence begin and end commands may
- be nested arbitrarily deep.
+ be nested arbitrarily deeply.
 
 }
 

pkgs/gui-pkgs/gui-doc/scribblings/gui/editor-intf.scrbl

@@ -194,7 +194,7 @@ Auto-wrapping is initially disabled.
 The @method[editor<%> begin-edit-sequence] and @method[editor<%>
  end-edit-sequence] methods are used to bracket a set of editor
  modifications so that the results are all displayed at once. The
- commands may be nested arbitrarily deep. Using these functions can
+ commands may be nested arbitrarily deeply. Using these functions can
  greatly speed up displaying the changes.
 
 When an editor contains other editors, using @method[editor<%>

pkgs/gui-pkgs/gui-lib/framework/gui-utils.rkt

@@ -420,7 +420,7 @@
    (-> void?))
   (delay-time open close)
   @{Use this function to delay an action for some period of time. It also
-    supports cancelling the action before the time period elapses. For
+    supports canceling the action before the time period elapses. For
     example, if you want to display a watch cursor, but you only want it
     to appear after 2 seconds and the action may or may not take more than
     two seconds, use this pattern:

pkgs/racket-pkgs/racket-doc/scribblings/guide/syntax-taints.scrbl

@@ -175,7 +175,7 @@ syntax object's parts are armed. If the property value is
 the sub-parts of the second part (as for @racket[define-values] and
 @racket[define-syntaxes]) are armed. The @racket['transparent] and
 @racket['transparent-binding] modes trigger recursive property
-checking at the parts, so that armings can be pushed arbitrarily deep
+checking at the parts, so that armings can be pushed arbitrarily deeply
 into a transformer's result.
 
 @;------------------------------------------------------------------------