docs: replace interface{} with any (Go 1.18+)

[MD-Mushfiqur123]

Replace interface{} with any across 4 files for Go 1.18+ compatibility.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 8b2ddd97-4df8-4b35-a9d2-767d8653bac3

📥 Commits

Reviewing files that changed from the base of the PR and between 56193b2 and e0d96b9.

📒 Files selected for processing (1)

• docs/middleware/session.md

✅ Files skipped from review due to trivial changes (1)

• docs/middleware/session.md

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Walkthrough

All changes replace the interface{} type alias with Go's equivalent any keyword across documentation comments in client/response.go and three documentation files (docs/guide/templates.md, docs/middleware/session.md, docs/whats_new.md). No method signatures, runtime logic, or functional behavior is changed.

Changes

interface{} → any terminology update

Layer / File(s)	Summary
Response method doc comments client/response.go	Doc comments for Response.JSON, Response.CBOR, and Response.XML updated to reference any instead of interface{}.
Docs: templates, session, whats_new docs/guide/templates.md, docs/middleware/session.md, docs/whats_new.md	Views.Render, Engine.AddFunc, Engine.AddFuncMap signatures in template docs; RegisterType example and type list in session docs; and Format method description in whats_new all updated to use any in place of interface{}.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• gofiber/fiber#3270: Switches Ctx.Render's bind parameter to any, directly related to the template Views.Render signature update in this PR.
• gofiber/fiber#3113: Also modifies docs/guide/templates.md for the Views Render method and Engine.AddFunc/AddFuncMap signatures.

Suggested labels

📒 Documentation, 🧹 Updates

Suggested reviewers

• efectn
• ReneWerner87

Poem

🐇 Hop, hop, through the code I go,
Swapping interface{} with any in a row,
The docs shine bright, the comments are clear,
No runtime changed — just tidy text here.
A small but tidy burrow, neat and true! ✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Description check	❓ Inconclusive	The PR description is minimal and lacks required sections from the template such as changes introduced, type of change selection, and the complete checklist items.	Expand the description to include checked boxes for 'Changes introduced' (Documentation Update), 'Type of change' (Code consistency), and confirm completion of relevant checklist items.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: replacing interface{} with the any keyword across documentation and code files for Go 1.18+ compatibility.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.39%. Comparing base (c6d692c) to head (e0d96b9).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4433   +/-   ##
=======================================
  Coverage   91.39%   91.39%           
=======================================
  Files         134      134           
  Lines       13473    13473           
=======================================
  Hits        12314    12314           
  Misses        737      737           
  Partials      422      422           

Flag	Coverage Δ
unittests	91.39% <ø> (ø)

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@docs/middleware/session.md`:
- Around line 474-475: The documentation example for store.RegisterType()
incorrectly shows the any keyword as an argument, which is not valid Go code
since any is a type keyword, not a value instance. Replace the any argument in
the store.RegisterType() function call with a concrete example of an actual type
instance (such as MyCustomType{}) to demonstrate the proper usage pattern and
help users understand how to correctly register their custom types.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 2172f581-c831-40b9-ad81-bc5cac62c3d7

📥 Commits

Reviewing files that changed from the base of the PR and between c6d692c and 56193b2.

📒 Files selected for processing (4)

• client/response.go
• docs/guide/templates.md
• docs/middleware/session.md
• docs/whats_new.md

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