fix markdown in 3rdpartynotices

ThirdPartyNotices

@@ -1,4 +1,4 @@
-##Legal Notices
+## Legal Notices
 Microsoft and any contributors grant you a license to the Microsoft documentation and other content
 in this repository under the [Creative Commons Attribution 4.0 International Public License](https://creativecommons.org/licenses/by/4.0/legalcode),
 see the [LICENSE](LICENSE) file, and grant you a license to any code in the repository under the [MIT License](https://opensource.org/licenses/MIT), see the
@@ -12,4 +12,4 @@ Microsoft's general trademark guidelines can be found at http://go.microsoft.com
 Privacy information can be found at https://privacy.microsoft.com/en-us/
 
 Microsoft and any contributors reserve all others rights, whether under their respective copyrights, patents,
-or trademarks, whether by implication, estoppel or otherwise.
+or trademarks, whether by implication, estoppel or otherwise.