Merge pull request #3232 from VitaliyHr/patch-1

docs(compression): add types to compresson install script

Author: kamilmysliwiec

Diff for: content/techniques/compression.md

@@ -12,6 +12,7 @@ First install the required package:
 
 ```bash
 $ npm i --save compression
+$ npm i --save-dev @types/compression
 ```
 
 Once the installation is complete, apply the compression middleware as global middleware.