test(client/v2): update golden file (#18048)

(cherry picked from commit 28dbfec)

client/v2/autocli/testdata/help-echo-msg.golden

@@ -26,7 +26,7 @@ Flags:
       --offline                  Offline mode (does not allow any online functionality)
   -o, --output string            Output format (text|json) (default "json")
   -s, --sequence uint            The sequence number of the signing account (offline mode only)
-      --sign-mode string         Choose sign mode (direct|amino-json|direct-aux), this is an advanced feature
+      --sign-mode string         Choose sign mode (direct|amino-json|direct-aux|textual), this is an advanced feature
       --timeout-height uint      Set a block timeout height to prevent the tx from being committed past a certain height
       --tip string               Tip is the amount that is going to be transferred to the fee payer on the target chain. This flag is only valid when used with --aux, and is ignored if the target chain didn't enable the TipDecorator
   -y, --yes                      Skip tx broadcasting prompt confirmation