Fix a bug where documentation contents are not built

[codecov[bot]]

Codecov Report

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

Comparison is base (0b7499e) 100.00% compared to head (72d686c) 100.00%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #171 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 37 37 Lines 2793 2791 -2 ========================================= - Hits 2793 2791 -2 ``` | [Files](https://app.codecov.io/gh/ku-nlp/rhoknp/pull/171?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ku-nlp) | Coverage Δ | | |---|---|---| | [src/rhoknp/cli/serve.py](https://app.codecov.io/gh/ku-nlp/rhoknp/pull/171?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ku-nlp#diff-c3JjL3Job2tucC9jbGkvc2VydmUucHk=) | `100.00% <100.00%> (ø)` | | | [src/rhoknp/cohesion/argument.py](https://app.codecov.io/gh/ku-nlp/rhoknp/pull/171?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ku-nlp#diff-c3JjL3Job2tucC9jb2hlc2lvbi9hcmd1bWVudC5weQ==) | `100.00% <100.00%> (ø)` | | | [src/rhoknp/cohesion/discourse.py](https://app.codecov.io/gh/ku-nlp/rhoknp/pull/171?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ku-nlp#diff-c3JjL3Job2tucC9jb2hlc2lvbi9kaXNjb3Vyc2UucHk=) | `100.00% <100.00%> (ø)` | | | [src/rhoknp/cohesion/exophora.py](https://app.codecov.io/gh/ku-nlp/rhoknp/pull/171?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ku-nlp#diff-c3JjL3Job2tucC9jb2hlc2lvbi9leG9waG9yYS5weQ==) | `100.00% <100.00%> (ø)` | | | [src/rhoknp/cohesion/pas.py](https://app.codecov.io/gh/ku-nlp/rhoknp/pull/171?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ku-nlp#diff-c3JjL3Job2tucC9jb2hlc2lvbi9wYXMucHk=) | `100.00% <100.00%> (ø)` | | | [src/rhoknp/cohesion/predicate.py](https://app.codecov.io/gh/ku-nlp/rhoknp/pull/171?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ku-nlp#diff-c3JjL3Job2tucC9jb2hlc2lvbi9wcmVkaWNhdGUucHk=) | `100.00% <100.00%> (ø)` | | | [src/rhoknp/cohesion/rel.py](https://app.codecov.io/gh/ku-nlp/rhoknp/pull/171?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ku-nlp#diff-c3JjL3Job2tucC9jb2hlc2lvbi9yZWwucHk=) | `100.00% <100.00%> (ø)` | | | [src/rhoknp/processors/processor.py](https://app.codecov.io/gh/ku-nlp/rhoknp/pull/171?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ku-nlp#diff-c3JjL3Job2tucC9wcm9jZXNzb3JzL3Byb2Nlc3Nvci5weQ==) | `100.00% <100.00%> (ø)` | | | [src/rhoknp/units/base\_phrase.py](https://app.codecov.io/gh/ku-nlp/rhoknp/pull/171?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ku-nlp#diff-c3JjL3Job2tucC91bml0cy9iYXNlX3BocmFzZS5weQ==) | `100.00% <100.00%> (ø)` | | | [src/rhoknp/units/clause.py](https://app.codecov.io/gh/ku-nlp/rhoknp/pull/171?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ku-nlp#diff-c3JjL3Job2tucC91bml0cy9jbGF1c2UucHk=) | `100.00% <100.00%> (ø)` | | | ... and [5 more](https://app.codecov.io/gh/ku-nlp/rhoknp/pull/171?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=ku-nlp) | |

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