Add docs for 3.0 (#4705)

Co-authored-by: qwerty287 <80460567+qwerty287@users.noreply.github.com>
Co-authored-by: qwerty287 <qwerty287@posteo.de>
Co-authored-by: Robert Kaussow <mail@thegeeklab.de>
Co-authored-by: Anbraten <anton@ju60.de>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Anbraten <6918444+anbraten@users.noreply.github.com>

docs/docusaurus.config.ts

@@ -86,6 +86,10 @@ const config = {
               to: '/api',
               label: 'API',
             },
+            {
+              to: '/about',
+              label: 'About',
+            },
           ],
         },
         {
@@ -191,7 +195,7 @@ const config = {
     },
     announcementBar: {
       id: 'github-star',
-      content: ` If you like Woodpecker-CI, <a href=https://github.com/woodpecker-ci/woodpecker rel="noopener noreferrer" target="_blank">give us a star on GitHub</a> ! ⭐️`,
+      content: `If you like Woodpecker-CI, <a href=https://github.com/woodpecker-ci/woodpecker rel="noopener noreferrer" target="_blank">give us a star on GitHub</a> ! ⭐️`,
       backgroundColor: 'var(--ifm-color-primary)',
       textColor: 'var(--ifm-color-gray-900)',
     },
@@ -286,7 +290,7 @@ const config = {
         // Theme Options for modifying how redoc renders them
         theme: {
           // Change with your site colors
-          primaryColor: '#1890ff',
+          primaryColor: '#4caf50',
         },
       },
     ],