Fix two capital-O Objects

These got lower-cased because I did not explain in the text
that the capital is significant.  The previous commit adds the
explanation (ported from 3.0.4) and this fixes the 3.1.1-specific
occurrences.

Author: handrews

versions/3.1.1.md

@@ -139,8 +139,8 @@ Implementations MAY support complete-document parsing in any of the following wa
 * Detecting OpenAPI or JSON Schema documents using media types
 * Detecting OpenAPI documents through the root `openapi` field
 * Detecting JSON Schema documents through detecting keywords or otherwise successfully parsing the document in accordance with the JSON Schema specification
-* Detecting a document containing a referenceable object at its root based on the expected type of the reference
-* Allowing users to configure the type of documents that might be loaded due to a reference to a non-root object
+* Detecting a document containing a referenceable Object at its root based on the expected type of the reference
+* Allowing users to configure the type of documents that might be loaded due to a reference to a non-root Object
 
 Implementations that parse referenced fragments of OpenAPI content without regard for the content of the rest of the containing document will miss keywords that change the meaning and behavior of the reference target.
 In particular, failing to take into account keywords that change the base URI introduces security risks by causing references to resolve to unintended URIs, with unpredictable results.