vdoc: plaintext fixes

vlib/builtin/array.v

@@ -119,7 +119,6 @@ pub fn (mut a array) sort_with_compare(compare voidptr) {
 // In the current state only that would work:
 // i := 3
 // a.insert(0, &i)
-// ----------------------------
 pub fn (mut a array) insert(i int, val voidptr) {
 	$if !no_bounds_checking? {
 		if i < 0 || i > a.len {
@@ -135,7 +134,6 @@ pub fn (mut a array) insert(i int, val voidptr) {
 
 // TODO array.prepend is broken
 // It depends on array.insert
-// -----------------------------
 pub fn (mut a array) prepend(val voidptr) {
 	a.insert(0, val)
 }

vlib/v/doc/doc.v

@@ -298,20 +298,23 @@ pub fn (mut d Doc) generate() ?bool {
 				prev_comments << stmt
 				continue
 			}
+			// TODO: Fetch head comment once
 			if stmt is ast.Module {
 				// the previous comments were probably a copyright/license one
 				module_comment := get_comment_block_right_before(prev_comments)
 				prev_comments = []
-				if module_comment == '' {
-					continue
+				if 'vlib' !in base_path && !module_comment.starts_with('Copyright (c)') {
+					if module_comment == '' {
+						continue
+					}
+					if module_comment == d.head.comment {
+						continue
+					}
+					if d.head.comment != '' {
+						d.head.comment += '\n'
+					}
+					d.head.comment += module_comment
 				}
-				if module_comment == d.head.comment {
-					continue
-				}
-				if d.head.comment != '' {
-					d.head.comment += '\n'
-				}
-				d.head.comment += module_comment
 				continue
 			}
 			if last_import_stmt_idx > 0 && sidx == last_import_stmt_idx {