Fix prerequisites callout (SDKs) (#372)

Author: devalog

fern/products/sdks/snippets/setup-fern-folder-callout.mdx

@@ -3,5 +3,5 @@
 
   * An initialized `fern` folder on your local machine. See [Set up the `fern`
     folder](/sdks/overview/quickstart).
-  * A GitHub repository for your TypeScript SDK. See [Project Structure](/sdks/overview/github).
+  * A GitHub repository for your SDK. See [Project Structure](/sdks/overview/github).
 </Info>