Comment fix.

lisp/progmodes/fortran.el

@@ -492,7 +492,7 @@ This varies according to the value of LINE-LENGTH.
 This is used to fontify fixed-format Fortran comments."
   ;; This results in a non-byte-compiled function.  We could pass it through
   ;; `byte-compile', but simple benchmarks indicate that it's probably not
-  ;; worth the trouble (about ½% of slow down).
+  ;; worth the trouble (about 0.5% of slow down).
   (eval                         ;I hate `eval', but it's hard to avoid it here.
    `(syntax-propertize-rules
      ("^[cd\\*]" (0 "<"))