fix(docs): Broken Mermaid/KaTeX Rendering

[markovejnovic]

Closes #82.

[github-actions]

Test Results

    4 files  ± 0  227 suites  ±0   3m 21s ⏱️ - 1m 4s
  675 tests + 6  675 ✅ +6    0 💤 ±0  0 ❌ ±0 
1 151 runs  +12  675 ✅ +6  476 💤 +6  0 ❌ ±0 

Results for commit 5567e24. ± Comparison against base commit f6f88dd.

This pull request removes 2 and adds 8 tests. Note that renamed tests count towards both.

Elixir.HyperTest ‑ test exec/3 with a pid that is not a VM supervisor returns {:error, :not_found}
Elixir.HyperTest ‑ test exec/3 with an unregistered vm_id returns {:error, :not_found}

Elixir.Hyper.Metering.UsageTest ‑ test Hyper.usage/1 across a VM's lifetime a stopped-but-metered VM reports its recorded lifetime total
Elixir.Hyper.Metering.UsageTest ‑ test Hyper.usage/1 across a VM's lifetime an entirely unknown VM is :not_found
Elixir.Hyper.Metering.UsageTest ‑ test Hyper.usage/1 across a VM's lifetime usage/1 resolves a pid handle to its vm_id and delegates
Elixir.HyperTest ‑ test exec/3 by a non-supervisor pid refuses with {:error, :not_found}
Elixir.HyperTest ‑ test exec/3 by an unregistered vm_id refuses with {:error, :not_found}
Elixir.HyperTest ‑ test fork_vm/1 by an unregistered vm_id refuses with {:error, :not_found}
Elixir.HyperTest ‑ test id/1 answers nil when the VM's owning node is unreachable
Elixir.HyperTest ‑ test usage/1 by a non-supervisor pid refuses with {:error, :not_found}

♻️ This comment has been updated with latest results.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ All tests successful. No failed tests found.

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