replace Help needed label image with text

the image breaks the layout on the official blog post

Author: lqd

templates/updates.hbs

@@ -33,7 +33,7 @@ The Rust project is currently working towards a [slate of {{goal_count}} project
 {{#each help_wanted}}
 
 <!-- markdown separator --> 
-![Help wanted](https://img.shields.io/badge/Help%20wanted-yellow) {{{text}}}
+*Help wanted:* {{{text}}}
 <!-- markdown separator --> 
 
 {{/each}}