Merge pull request #38 from FirelyTeam/feature/string-markdown-valida…

…tion-pattern

string markdown validation pattern

src/Microsoft.Health.Fhir.SpecManager/Language/CSharpFirelyCommon.cs

@@ -59,6 +59,8 @@ internal static class CSharpFirelyCommon
             ["oid"] = "OidPattern",
             ["code"] = "CodePattern",
             ["time"] = "TimePattern",
+            ["string"] = "StringPattern",
+            ["markdown"] = "StringPattern"
         };
 
         /// <summary>Writes an indented comment.</summary>