v.mod: remove commas; add example for v.vmod (#6169)

examples/vmod.v

@@ -0,0 +1,11 @@
+module main
+
+import v.vmod
+
+fn main() {
+	mod := vmod.decode(@VMOD_FILE) or {
+		panic('Error decoding v.mod')
+	}
+	println('$mod.name has version $mod.version')
+	println('\nThe full mod struct: \n$mod')
+}