Add test for unterminated shortcode#

components/rendering/tests/markdown.rs

@@ -162,6 +162,14 @@ Hello
     assert!(res.0.contains(r#"//player.vimeo.com/video/210073083""#));
 }
 
+#[test]
+fn errors_if_unterminated_shortcode() {
+    let permalinks_ctx = HashMap::new();
+    let context = Context::new(&GUTENBERG_TERA, true, "base16-ocean-dark".to_string(), "", &permalinks_ctx, InsertAnchor::None);
+    let res = markdown_to_html(r#"{{ youtube(id="w7Ft2ym_a"#, &context);
+    assert!(res.is_err());
+}
+
 #[test]
 fn doesnt_render_shortcode_in_code_block() {
     let permalinks_ctx = HashMap::new();

docs/content/documentation/content/shortcodes.md

@@ -45,7 +45,7 @@ Any shortcodes in code blocks will be ignored.
 
 Lastly, a shortcode name (and thus the corresponding `.html` file) as well as the arguments name 
 can only contain numbers, letters and underscores, or in Regex terms the following: `[0-9A-Za-z_]`.
-While theoretically an argument name could be a number, it will not be possible to use in the template.
+While theoretically an argument name could be a number, it will not be possible to use it in the template in that case.
 
 ### Shortcodes without body