Render enum param values as CODE
Render enum param values as CODE

If an resource enum parameter has values that end in whitespace or dot
it can be hard to tell with certainty from the generated
documentation. This is because values aren't quoted or otherwise
enclosed. This patch encloses them in CODE elements, which stand out
with clarity from surrounding text.

TwilightCoders/apipie-rails,lambda2/api-engine,johnnaegle/apipie-rails,ifeelgoods/apipie-rails,edwardjewson/apipie-rails,Apipie/apipie-rails,johnnaegle/apipie-rails,ifeelgoods/apipie-rails,lambda2/api-engine,42School/api-engine,lambda2/api-engine,edwardjewson/apipie-rails,Apipie/apipie-rails,Apipie/apipie-rails,42School/api-engine,TwilightCoders/apipie-rails,TwilightCoders/apipie-rails,42School/api-engine,johnnaegle/apipie-rails,ifeelgoods/apipie-rails,edwardjewson/apipie-rails