docs: fix the link for terraform installation

[yizha1]

Description

What this PR does / why we need it:

The link used for Azure document pointed to a different cloud provider.

Which issue(s) this PR fixes (optional, using fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when the PR gets merged):

Fixes #1013

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Helm Chart Change (any edit/addition/update that is necessary for changes merged to the main branch)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Please also list any relevant details for your test configuration

• Test A
• Test B

Checklist:

• Does the affected code have corresponding tests?
• Are the changes documented, not just with inline documentation, but also with conceptual documentation such as an overview of a new feature, or task-based documentation like a tutorial? Consider if this change should be announced on your project blog.
• Does this introduce breaking changes that would require an announcement or bumping the major version?
• Do all new files have appropriate license header?

Post Merge Requirements

• MAINTAINERS: manually trigger the "Publish Package" workflow after merging any PR that indicates Helm Chart Change

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.02% ⚠️

Comparison is base (80122da) 58.17% compared to head (2349d26) 58.16%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1014      +/-   ##
==========================================
- Coverage   58.17%   58.16%   -0.02%     
==========================================
  Files          91       91              
  Lines        5447     5448       +1     
==========================================
  Hits         3169     3169              
- Misses       1964     1965       +1     
  Partials      314      314              

Files Changed	Coverage Δ
pkg/manager/manager.go	3.35% <0.00%> (-0.02%)	⬇️

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.