Fix pre-commit errors

Author: shaun-nx

docs/proposals/authentication-filter.md

@@ -80,10 +80,10 @@ spec:
       responseBody: 'Unauthorized'
 ```
 
-| **Pros**     | **Cons**      | 
+| **Pros**     | **Cons**      |
 |-------------------------------|--------------|
-| Single Resource to manage    | Resource updates may be difficult | 
-|                              | May require lots of internal logic | 
+| Single Resource to manage    | Resource updates may be difficult |
+|                              | May require lots of internal logic |
 
 ### 2. Individual Filter for each Auth method
 
@@ -102,10 +102,10 @@ spec:
     responseBody: 'Unauthorized'
 ```
 
-| **Pros**     | **Cons**      | 
+| **Pros**     | **Cons**      |
 |-------------------------------|--------------|
-| Versioning per-resource is much easier    | Multiple resources to manage | 
-| Easier to map to `graph` in go code    | | 
+| Versioning per-resource is much easier    | Multiple resources to manage |
+| Easier to map to `graph` in go code    | |
 
 ### Example integration
 
@@ -288,4 +288,4 @@ A HTTPRoute that is already deployed, and references an authentication based fil
 
 A HTTPRoute that is already deployed, and references an authentication based filter that has been delete, should update the NGINX configuration to reflect the removal of the filter.
 
-A new HTTPRoute that has yet to be deployed, and is referencing a filter that does `not` exist may be `rejected` when attempting to apply it.
+A new HTTPRoute that has yet to be deployed, and is referencing a filter that does `not` exist may be `rejected` when attempting to apply it.