Update sp_doc.md

Author: lowlydba

docs/sp_doc.md

@@ -26,7 +26,7 @@ fewer *free* options exist to help present databases in a human readable format.
 
 `sp_doc`'s goal is to generate on the fly database documentation in
 markdown. This means you now have a free and extensible
-self*documenting database! By building the tool in T*SQL, the documenting
+self-documenting database! By building the tool in T-SQL, the documenting
 process can remain simple, secure, require no additional infrastructure, and avoid
 red tape that third party applications often require.