Integrate PR feedback and merge updated enum value.

src/metaschema/oscal_ssp_metaschema.xml

@@ -156,7 +156,7 @@
         </enum>
         <enum value="community-cloud">The community cloud deployment model as defined by <a href="https://doi.org/10.6028/NIST.SP.800-145">The NIST Definition of Cloud Computing</a>.
         </enum>
-        <enum value="hybrid-cloud"> The hybrid cloud deployment model, as defined by <a href="https://doi.org/10.6028/NIST.SP.800-145">The NIST Definition of Cloud Computing</a>, can be supported by selecting two or more of the existing deployment models.
+        <enum value="hybrid-cloud">The hybrid cloud deployment model as defined by as defined by <a href="https://doi.org/10.6028/NIST.SP.800-145">The NIST Definition of Cloud Computing</a>.
         </enum>
         <!-- TODO: consider generalizing this in a way that applies to other usage contexts. -->
         <enum value="government-only-cloud">A specific type of community-cloud for use only by government services.</enum>