update RFC5

Author: tomkralidis

docs/development/rfc/5.md

@@ -43,9 +43,8 @@ The `limits` setting will be applied as follows:
 
 ## Implementation
 
-An `evaluate_limit` function will be added to the `pygeoapi` module for use by `pygeoapi.api` accordingly.
-
-If `limits.on_surpass` is `error`, then pygeoapi will throw HTTP 413
+- an `evaluate_limit` function will be added to the `pygeoapi` module for use by `pygeoapi.api` accordingly
+- if `limits.on_surpass` is `error`, then pygeoapi will throw HTTP 413
 
 ### Backwards Compatibility Issues