Change BEGING_SIGNING to BEGIN_SIGNING.

Per https://github.com/github/smimesign/blob/c068195384830899ef594141a7586039afd0c7ec/status.go#L17 and https://github.com/gpg/gnupg/blob/918792befd835e04b4043b9ce42ea6d829a284fa/doc/DETAILS#begin_signing , sthis is a typo.

Author: lgarron

command_sign.go

@@ -24,7 +24,7 @@ func commandSign() error {
 	}
 
 	// Git is looking for "\n[GNUPG:] SIG_CREATED ", meaning we need to print a
-	// line before SIG_CREATED. BEGING_SIGNING seems appropraite. GPG emits this,
+	// line before SIG_CREATED. BEGIN_SIGNING seems appropraite. GPG emits this,
 	// though GPGSM does not.
 	sBeginSigning.emit()
 

status.go

@@ -22,7 +22,7 @@ const (
 	// BEGIN_SIGNING
 	//   Mark the start of the actual signing process. This may be used as an
 	//   indication that all requested secret keys are ready for use.
-	sBeginSigning status = "BEGING_SIGNING"
+	sBeginSigning status = "BEGIN_SIGNING"
 
 	// SIG_CREATED <type> <pk_algo> <hash_algo> <class> <timestamp> <keyfpr>
 	//   A signature has been created using these parameters.