fix: correct SAML certificate format for EMU SSO configuration (Base64 → PEM) (#60221)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: lecoursen <14935376+lecoursen@users.noreply.github.com>
Co-authored-by: Laura Coursen <lecoursen@github.com>

Author: Copilot

content/admin/managing-iam/configuring-authentication-for-enterprise-managed-users/configuring-saml-single-sign-on-for-enterprise-managed-users.md

@@ -88,7 +88,7 @@ To configure SAML SSO for your {% data variables.enterprise.prodname_emu_enterpr
     | :- | :- | :- |
     | IdP Sign-On URL | Login URL, IdP URL | Application's URL on your IdP |
     | IdP Identifier URL | Issuer | IdP's identifier to service providers for SAML authentication |
-    | Signing certificate, Base64-encoded | Public certificate | Public certificate that IdP uses to sign authentication requests |
+    | Signing certificate, PEM-encoded | Public certificate | Public certificate that IdP uses to sign authentication requests |
 
 ### Configure your enterprise