guess-rev.sh: fix minor typo

s/reecognized/recognized/

Change-Id: I7129090d464d780632c0b7504e48fb90e847b30d
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/5163
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>

guess-rev.sh

@@ -79,5 +79,5 @@ if rev=`svn info 2>/dev/null | grep '^Last Changed Rev'`; then
 	exit
 fi
 
-# There's no reecognized repository; we must be a snapshot.
+# There's no recognized repository; we must be a snapshot.
 printf -- '-snapshot'