[v2-9] docs: fix two broken in-page anchors (AWS integration, Helm use case) - #2679

Changed pages include:

• index.html - view
• 404.html - view
• adopters/index.html - view
• blog/index.html - view
• community/index.html - view
• contributing/index.html - view
• ecosystem/index.html - view
• flagger/index.html - view
• flux/index.html - view
• governance/index.html - view

There are more changes not included in the list