libcurl-errors.3: add two missing error codes

CURLE_SSL_PINNEDPUBKEYNOTMATCH and CURLE_SSL_INVALIDCERTSTATUS

docs/libcurl/libcurl-errors.3

@@ -247,6 +247,10 @@ Chunk callback reported error.
 .IP "CURLE_NO_CONNECTION_AVAILABLE (89)"
 (For internal use only, will never be returned by libcurl) No connection
 available, the session will be queued. (added in 7.30.0)
+.IP "CURLE_SSL_PINNEDPUBKEYNOTMATCH (90)"
+Failed to match the pinned key specified with \fICURLOPT_PINNEDPUBLICKEY(3)\fP.
+.IP "CURLE_SSL_INVALIDCERTSTATUS (91)"
+Status returned failure when asked with \fICURLOPT_SSL_VERIFYSTATUS(3)\fP.
 .IP "CURLE_OBSOLETE*"
 These error codes will never be returned. They were used in an old libcurl
 version and are currently unused.