Update format of version declaration

Shellfu v0.10.4+ will use the newer format.  This does not justify
hard dependency change, as no known functional components rely on the
version; only thing that uses it is sfdoc to display module version in
man page footer.

src/uripecker.sh.skel

@@ -270,4 +270,4 @@ __uripecker__urlquote() {
     )" "$query"
 }
 
-#shellfu module-version: __MKIT_PROJ_VERSION__
+#shellfu module-version=__MKIT_PROJ_VERSION__