fix(testnet): update OKCHAIN_TOP reference to current path

[zibuyu28]

• Targeted PR against correct branch (see CONTRIBUTING.md)

• Linked to github-issue with discussion and accepted design OR link to spec that describes this work.

• Wrote tests

• Updated relevant documentation (docs/)

• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md

• Reviewed Files changed in the github PR explorer

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For Admin Use:

• Added appropriate labels to PR (ex. wip, ready-for-review, docs)
• Reviewers Assigned
• Squashed all commits, uses message "Merge PR #XYZ: [title]" (coding standards)

[codecov-commenter]

Codecov Report

Merging #193 (ba7ae3d) into dev (1ce57a6) will not change coverage.
The diff coverage is n/a.

❗ Current head ba7ae3d differs from pull request most recent head 1e6cdcf. Consider uploading reports for the commit 1e6cdcf to get more accurate results

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@@           Coverage Diff           @@
##              dev     #193   +/-   ##
=======================================
  Coverage   34.45%   34.45%           
=======================================
  Files         430      430           
  Lines       44879    44879           
=======================================
  Hits        15463    15463           
  Misses      28268    28268           
  Partials     1148     1148