fix: quick changes (#219)

These are a couple of quick fixes that were breaking the new site generator.

aep/general/0134/aep.md.j2

@@ -136,9 +136,11 @@ using `PUT`.
 
 To illustrate this, consider a `PUT` request to a `Book` resource:
 
+```
     PUT /v1/publishers/123/books/456
 
     {"title": "Mary Poppins", "author": "P.L. Travers"}
+```
 
 Next consider that the resource is later augmented with a new field (here we
 add `rating`, and use a protobuf example without loss of generality):

aep/general/0159/aep.md.j2

@@ -37,6 +37,10 @@ guidance in [unreachable resources].
   specified with `*` and permit the collection to be specified; a URI pattern
   **must not** hard-code the `-` character.
 
+{% tab oas %}
+
+Note: OAS guidance is yet to be written.
+
 {% endtabs %}
 
 ### Unique resource lookup

aep/general/0193/aep.md.j2

@@ -65,10 +65,6 @@ A JSON representation of an error response might look like the following:
 }
 ```
 
-{% tab oas -%}
-
-The media-type for an error response should be "application/problem+json".
-
 {% tab proto -%}
 
 Services **must** return a [`google.rpc.Status`][Status] message when an API
@@ -81,6 +77,10 @@ The error response structure defined above **should** be returned in the
 [`aep.api.ProblemDetails`](https://buf.build/aep/api/docs/main:aep.api#aep.api.ProblemDetails)
 to define this field.
 
+{% tab oas -%}
+
+The media-type for an error response should be "application/problem+json".
+
 {% endtabs %}
 
 #### Dynamic variables