updates toc entry for domains article and fixes an error

Author: evangelinew

articles/purview/toc.yml

@@ -56,7 +56,7 @@ items:
         href: concept-best-practices-collections.md
       - name: Deployment best practices
         href: deployment-best-practices.md
-      - name: Governing domains with Purview: best practices for collections, glossaries, and asset types
+      - name: Governing domains with Purview - best practices for collections, glossaries, and asset types
         href: concept-best-practices-governing-domains.md
       - name: Glossary best practices
         href: concept-best-practices-glossary.md