CDRIVER-2505 fix file name in third-party license file

rcsanchez97 · rcsanchez97 · commit 63e5e92394af · 2018-05-17T21:31:15.000-04:00
diff --git a/THIRD_PARTY_NOTICES b/THIRD_PARTY_NOTICES
@@ -1,6 +1,6 @@
 The MongoDB C Driver uses third-party code distributed under different licenses.
 
-License notice for mongoc-b64.c
+License notice for common-b64.c
 -------------------------------------------------------------------------------
 
 ISC License
