Updating storage-classes to fix outdated redirect URL for volume-provisioning.md in external provisioner specification - #56260

Changed pages include:

• index.html - view
• 404.html - view
• blog/index.html - view
• bn/index.html - view
• careers/index.html - view
• case-studies/index.html - view
• community/index.html - view
• de/index.html - view
• docs/index.html - view
• en/index.html - view

There are more changes not included in the list