vfmt: fix `x := Repo<User,Permission>{}`

vlib/v/fmt/fmt.v

@@ -1272,6 +1272,15 @@ pub fn (mut f Fmt) short_module(name string) string {
 	if !name.contains('.') {
 		return name
 	}
+	if name.ends_with('>') {
+		x := name.trim_suffix('>').split('<')
+		if x.len == 2 {
+			main := f.short_module(x[0])
+			genlist := x[1].split(',').map(f.short_module(it)).join(',')
+			res := '$main<${genlist}>'
+			return res
+		}
+	}
 	vals := name.split('.')
 	if vals.len < 2 {
 		return name

vlib/v/fmt/tests/generic_structs_keep.vv

@@ -16,6 +16,16 @@ pub mut:
 	permission U
 }
 
+struct User {
+mut:
+	name string
+}
+
+struct Permission {
+pub mut:
+	name string
+}
+
 fn main() {
 	foo_int := Foo<int>{2}
 	assert foo_int.value() == '2'
@@ -25,4 +35,11 @@ fn main() {
 	println(x.db)
 	println(x.model)
 	println(x.permission)
+	//
+	mut a := Repo<User,Permission>{
+		model: User{
+			name: 'joe'
+		}
+	}
+	println(a.model.name)
 }