Update src/main/resources/com/cloudbees/jenkins/plugins/sshagent/SSHAgentStep/help-credentials.html

Co-authored-by: Mark Waite <[email protected]>

Author: Onyimatics

src/main/resources/com/cloudbees/jenkins/plugins/sshagent/SSHAgentStep/help-credentials.html

@@ -1,3 +1,15 @@
 <div>
-    Select credentials from the list of credentials available to the job.
-</div>
+    List of credentials to be used by the sshagent step.
+    The Pipeline Syntax Snippet Generator will guide the user to select a single credential from the list of available, like this:
+    <code>
+    sshagent(credentials: ['my-credential-id']) {
+        // some block
+    }
+    </code>
+    The step also accepts a list of credential, like this:
+    <code>
+    sshagent(credentials: ['my-credential-id', 'my-alternate-credential', 'another-credential']) {
+        // some block
+    }
+    </code>
+</div>