docs(cloud): added saml description (#963)

---------

Co-authored-by: Anton Malinskiy <[email protected]>

docs/cloud/misc/sso.md

@@ -0,0 +1,17 @@
+---
+title: "SSO"
+---
+
+###
+Marathon Cloud supports Single Sign-On (SSO) via SAML.
+
+### Domain verification
+Setting up SAML requires verification of ownership of your domain(s). To add your domain, visit the [Domains page](https://cloud.marathonlabs.io/domains) and follow the instructions. After adding the domain, you'll need to add a TXT record to your DNS zone file. DNS record updates typically take 5 to 10 minutes, but in some cases, it may take up to 72 hours.
+
+### SAML configuration
+To configure SAML, you'll need the following parameters:
+- SAML SSO URL
+- Entity ID
+- Public certificate
+
+You can check if the configuration is valid by clicking "Test сonfiguration."

docs/cloud/sidebars.js

@@ -41,7 +41,8 @@ const sidebars = {
             label: 'Misc',
             collapsed: false,
             items: [
-                'misc/pricing'
+                'misc/pricing',
+                'misc/sso'
             ]
         },