param should not have space after colon

lib/js/Trapped-Frontend.js

@@ -900,7 +900,7 @@ return _st($6)._value_value_(data,html);
 }, function($ctx2) {$ctx2.fillBlock({data:data,html:html},$ctx1,1)})}));
 return self}, function($ctx1) {$ctx1.fill(self,"trap:toggle:ifNotPresent:",{path:path,aBlock:aBlock,anotherBlock:anotherBlock,shown:shown},smalltalk.TagBrush)})},
 args: ["path", "aBlock", "anotherBlock"],
-source: "trap: path toggle: aBlock ifNotPresent: anotherBlock\x0a    | shown |\x0a    shown := nil.\x0a    self trap: path read: [ :data : html |\x0a        shown = data notNil ifFalse: [\x0a            shown := data notNil.\x0a            self asJQuery empty; show.\x0a            (shown ifTrue: [aBlock] ifFalse: [anotherBlock]) value: data value: html.\x0a        ]\x0a    ]",
+source: "trap: path toggle: aBlock ifNotPresent: anotherBlock\x0a    | shown |\x0a    shown := nil.\x0a    self trap: path read: [ :data :html |\x0a        shown = data notNil ifFalse: [\x0a            shown := data notNil.\x0a            self asJQuery empty; show.\x0a            (shown ifTrue: [aBlock] ifFalse: [anotherBlock]) value: data value: html.\x0a        ]\x0a    ]",
 messageSends: ["trap:read:", "ifFalse:", "=", "notNil", "empty", "asJQuery", "show", "value:value:", "ifTrue:ifFalse:"],
 referencedClasses: []
 }),

lib/st/Trapped-Frontend.st

@@ -295,7 +295,7 @@ trap: path toggle: aBlock
 trap: path toggle: aBlock ifNotPresent: anotherBlock
     | shown |
     shown := nil.
-    self trap: path read: [ :data : html |
+    self trap: path read: [ :data :html |
         shown = data notNil ifFalse: [
             shown := data notNil.
             self asJQuery empty; show.