fix: relative links don't work with a proxy

[darrenvechain]

Description

Changes API docs to use absolute links instead of relative links, as they break with a proxy

Type of change

• [x] Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Start a proxy and visit the node docs

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [x] New and existing E2E tests pass locally with my changes
• [x] Any dependent changes have been merged and published in downstream modules
• [x] I have not added any vulnerable dependencies to my code

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 61.61%. Comparing base (0489d6a) to head (2ba1bf7). Report is 2 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #738 +/- ## ========================================== + Coverage 61.37% 61.61% +0.24% ========================================== Files 194 194 Lines 18223 18259 +36 ========================================== + Hits 11184 11250 +66 + Misses 5958 5909 -49 - Partials 1081 1100 +19 ```

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