feat: add angular tech documentary

fix #96

Author: sonallux

docs/tech-documentaries.mdx

@@ -4,6 +4,7 @@ import YouTubeVideo from '@site/src/components/YouTubeVideo';
 
 <div style={{display: "flex", flexWrap: "wrap", gap: "1rem"}}>
 
+  <YouTubeVideo videoId="cRC9DlH45lA" title="Angular: The Documentary"></YouTubeVideo>
   <YouTubeVideo videoId="LB8KwiiUGy0" title="Node.js: The Documentary"></YouTubeVideo>
   <YouTubeVideo videoId="U6s2pdxebSo" title="Typescript Origins: The Documentary"></YouTubeVideo>
   <YouTubeVideo videoId="kMlkCYL9qo0" title="Svelte Origins: A JavaScript Documentary"></YouTubeVideo>