Mention prune resources feature status in feature page

[khanhtc1202]

What this PR does:

Why we need it:

Which issue(s) this PR fixes:

Fixes #

Does this PR introduce a user-facing change?:

• How are users affected by this change:
• Is this breaking change:
• How to migrate (if breaking change):

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 27.85%. Comparing base (01f082b) to head (7226885).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5890   +/-   ##
=======================================
  Coverage   27.85%   27.85%           
=======================================
  Files         519      519           
  Lines       55793    55793           
=======================================
  Hits        15539    15539           
  Misses      39070    39070           
  Partials     1184     1184           

Flag	Coverage Δ
.	23.75% <ø> (ø)
.-pkg-app-pipedv1-plugin-example	0.00% <ø> (ø)
.-pkg-app-pipedv1-plugin-kubernetes	63.60% <ø> (ø)
.-pkg-app-pipedv1-plugin-kubernetes_multicluster	64.93% <ø> (ø)
.-pkg-app-pipedv1-plugin-wait	35.51% <ø> (ø)
.-pkg-plugin-sdk	49.25% <ø> (ø)
.-tool-actions-gh-release	19.58% <ø> (ø)
.-tool-actions-plan-preview	23.22% <ø> (ø)
.-tool-codegen-protoc-gen-auth	0.00% <ø> (ø)

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[t-kikuc]

Thank you!

[ffjlabo]

👍