Fix simple typo

Author: Leporacanthicus

flang/docs/Directives.md

@@ -39,7 +39,7 @@ A list of non-standard directives supported by Flang
 * `!dir$ vector always` forces vectorization on the following loop regardless
   of cost model decisions. The loop must still be vectorizable.
   [This directive currently only works on plain do loops without labels].
-* `!dir$ ivdep` tells vecorization to ignore the dependency analysis of the
+* `!dir$ ivdep` tells vectorization to ignore the dependency analysis of the
   following loop.
 
 # Directive Details