Fix typo that kept data: images from updating the titlebar. Bug 293399,

r=biesi, sr=brendan, a=dbaron

content/html/document/src/nsImageDocument.cpp

@@ -728,7 +728,7 @@ nsImageDocument::UpdateTitleAndCharset()
   {
     "ImageTitleWithNeitherDimensionsNorFile",
     "ImageTitleWithoutDimensions",
-    "ImageTitleWithDimesions",
+    "ImageTitleWithDimensions",
     "ImageTitleWithDimensionsAndFile",
   };