Update prow/cluster/README.md

Co-authored-by: Aleksandra Simeonova <[email protected]>

prow/cluster/README.md

@@ -16,5 +16,5 @@ The structure of the folder looks as follows:
   └── static-files          # Files that will be uploaded to the nginx web server.
 ```
 
-##  Adding static files
-All files added to the `static-files` folder are automatically uploaded by Prow config_updater plugin to the cluster in a ConfigMap. Uploaded files are mounted by the web server in the web root directory. To route traffic for a specific path to the nginx web server, in order to serve these files, update the ingress `tls-ing` configuration in `tls-ing_ingress.yaml`.
+###  Adding static files
+All files added to the `static-files` folder are automatically uploaded by the Prow `config_updater` plugin to the cluster in a ConfigMap. Uploaded files are mounted by the web server in the web root directory. To route traffic for a specific path to the NGINX web server, in order to serve these files, update the Ingress `tls-ing` configuration in `tls-ing_ingress.yaml`.