Comment typo fix; no bug. (DONTBUILD)

--HG--
extra : rebase_source : 9b2e37ed8770288e3d83e3ac1d9b6290eb5d35cd

layout/style/nsStyleContext.cpp

@@ -401,7 +401,7 @@ nsStyleContext::ApplyStyleFixups(bool aSkipFlexItemStyleFixup)
     }
   }
 
-  // Computer User Interface style, to trigger loads of cursors
+  // Compute User Interface style, to trigger loads of cursors
   StyleUserInterface();
 }