add guide to overview page

Author: shirgoldbird

docs/learning-how-tos/examples-and-guides.mdx

@@ -1,7 +1,7 @@
 ---
 title: "Guides"
 sidebarTitle: "Overview"
-description:  "A collection of guides for addressing common issues with the DeepL API."
+description:  "Learn how to use DeepL API features to achieve your translation goals."
 public: true
 ---
 <CardGroup cols={2}>
@@ -21,5 +21,8 @@ public: true
   </Card>
   <Card title="Enable support for Beta languages" horizontal href="/docs/learning-how-tos/examples-and-guides/enable-beta-languages">
 
+  </Card>
+  <Card title="How to Use the Context Parameter Effectively" horizontal href="/docs/learning-how-tos/examples-and-guides/enable-beta-languages">
+    
   </Card>
 </CardGroup>