Modify the way Mesa tags are presented

- Just for consistency with other projects

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>

projects/mesa.sh

@@ -12,5 +12,5 @@ list_tags_h()
     echo "$tags" |
     grep ^mesa-[0-9]*[\.][0-9]* |
     tac |
-    sed -r 's/^mesa-([0-9]*)(\.[0-9]*)(.*)$/\1 \1\2 mesa-\1\2\3/'
+    sed -r 's/^mesa-([0-9]*)(\.[0-9]*)(.*)$/v\1 v\1\2 mesa-\1\2\3/'
 }