add reusable workflow example

Signed-off-by: Meredith Lancaster <[email protected]>

pkg/cmd/attestation/verify/verify.go

@@ -54,10 +54,14 @@ func NewVerifyCmd(f *cmdutil.Factory, runF func(*Options) error) *cobra.Command
 			To see the full results that are generated upon successful verification, i.e.
 			for use with a policy engine, provide the %[1]s--json-result%[1]s flag.
 
-			To specify a trusted certificate signing identity that differs from the artifact's source
+			To specify a trusted signing identity that differs from the artifact's source
 			owner or repository, provide either the %[1]s--cert-identity%[1]s 
 			or %[1]s--cert-identity-regex%[1]s flag.
 
+			For example, if you use a reusable workflow to release and attest your 
+			artifacts, you can use the %[1]s--cert-identity%[1]s or 
+			%[1]s--cert-identity-regex%[1]s flags to specify the reusable workflow's URI.
+
 			For more policy verification options, see the other available flags.
 			`, "`"),
 		Example: heredoc.Doc(`