Allow for multiple library collections; Store AstFile as pointer

src/docs.cpp

@@ -94,7 +94,7 @@ void print_declaration(AstNode *decl) {
 
 void generate_documentation(Parser *parser) {
 	for_array(file_index, parser->files) {
-		AstFile *file = &parser->files[file_index];
+		AstFile *file = parser->files[file_index];
 		Tokenizer *tokenizer = &file->tokenizer;
 		String fullpath = tokenizer->fullpath;
 		gb_printf("%.*s\n", LIT(fullpath));