[Merge][CMake] Merged revisions : 6689

Revision  r6689
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Fixed spelling error.

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[[Imported from SVN: r7209]]

cmake/modules/DuneDoc.cmake

@@ -21,7 +21,7 @@ if(NOT IMAGEMAGICK_CONVERT)
   set(LATEX_USABLE)
 endif(NOT IMAGEMAGICK_CONVERT)
 if(LATEX_USABLE)
-  set(LATEX_MANGLE_TARGET_NAMES "ON" CACHE INTERNAL "Mangel target names to allow multiple latex documents")
+  set(LATEX_MANGLE_TARGET_NAMES "ON" CACHE INTERNAL "Mangle target names to allow multiple latex documents")
   include(UseLATEX)
 endif(LATEX_USABLE)