Docs: Add doc for string and int

docs/content/templates/functions.md

@@ -357,6 +357,15 @@ e.g.
 </tbody>
 </table>
 
+## Numbers
+
+### int
+
+Creates a `int`.
+
+e.g.
+
+* `{{int "123" }}` → 123
 
 ## Strings
 
@@ -488,6 +497,14 @@ e.g.
 * `{{slicestr "BatMan" 3}}` → "Man"
 * `{{slicestr "BatMan" 0 3}}` → "Bat"
 
+### string
+
+Creates a `string`.
+
+e.g.
+
+* `{{string "BatMan"}}` → "BatMan"
+
 ### substr
 
 Extracts parts of a string, beginning at the character at the specified