Lots of documentation formatting.

Started as fixing misindented definitions, then more indentations, then
a bunch of similar things (square brackets, huge spaces at end-of-lines,
etc).

original commit: d61eb53686f735b979a60dc6f9efd3d2aa9777d9

collects/scribblings/framework/frame.scrbl

@@ -36,15 +36,15 @@
     @racketblock[
     (class ...
       ...
-     (define status-panel #f)
-     (define/override (make-root-area-container cls parent)
-       (set! status-panel
-             (super make-root-area-container vertical-panel% parent))
-       (let ([root (make-object cls status-panel)])
+      (define status-panel #f)
+      (define/override (make-root-area-container cls parent)
+        (set! status-panel
+              (super make-root-area-container vertical-panel% parent))
+        (let ([root (make-object cls status-panel)])
 
-          (code:comment "... add other children to status-panel ...")
+           (code:comment "... add other children to status-panel ...")
 
-          root))
+           root))
       ...)]
 
     In this example, status-panel will contain a root panel for the other
@@ -186,7 +186,7 @@
     See also @racket[frame:setup-size-pref].
 
   }
-                                                                               
+
   @defmethod*[#:mode override (((on-size (width number?) (height number?)) void?))]{
 
     Updates the preferences, according to the width and

collects/scribblings/framework/splash.scrbl

@@ -85,7 +85,7 @@ that number to control the gauge along the bottom of the splash screen.
              exact-nonnegative-integer?
              exact-nonnegative-integer?
              void?)]{
-  Returns the callback that is invoked when redrawing the splash screen.                    
+  Returns the callback that is invoked when redrawing the splash screen.
 }
 @defproc[(set-splash-paint-callback
           [cb

collects/scribblings/gui/snip-class.scrbl

@@ -247,7 +247,7 @@ more specific equivalence comparison.}}
 @methspec{See @racket[equal<%>].}
  
 @methimpl{Returns @racket[1].}}
-                    
+
 @defmethod[(find-scroll-step [y real?])
            exact-nonnegative-integer?]{
 

collects/scribblings/gui/wxme.scrbl

@@ -9,11 +9,11 @@
                      (except-in wxme/cache-image reader)))
 
 @(define-syntax-rule (in mod . content)
-  (begin
-   (define-syntax-rule (intro)
-     (begin (require (for-label mod))
-            . content))
-   (intro)))
+   (begin
+     (define-syntax-rule (intro)
+       (begin (require (for-label mod))
+              . content))
+     (intro)))
 
 @title{WXME Decoding}