Update docs to 0.3.1

Author: jhivandb

versioned_docs/version-v0.3.x/_constants.mdx

@@ -1,8 +1,7 @@
 [//]  # (This file stores the constants used across the documentation.)
 
 export const versions = {
-    dockerTag: '4be7287',
-    // TODO: Update this to the latest release version after v0.3.1 is released.
+    dockerTag: 'v0.3.1',
     githubRef: 'release-v0.3', // Used for the GitHub Raw URL references. Example: main, latest, v0.1.0
-    helmChart: '0.3.0',
+    helmChart: '0.3.1',
 };