define code_block function with quote not string

[chlebowa]

Closes #221

[github-actions]

Code Coverage Summary

Filename              Stmts    Miss  Cover    Missing
------------------  -------  ------  -------  -----------------------------------------------------------------------------------
R/AddCardModule.R       144       2  98.61%   162, 199
R/Archiver.R             25       0  100.00%
R/ContentBlock.R         18       2  88.89%   38-44
R/DownloadModule.R      207      49  76.33%   95-101, 143, 168-173, 182-186, 189-193, 201-205, 208-212, 219-223, 226-230, 267-271
R/FileBlock.R            13       0  100.00%
R/NewpageBlock.R          2       0  100.00%
R/PictureBlock.R         30       2  93.33%   15, 79
R/Previewer.R           295      56  81.02%   188, 202, 204-207, 210, 213-221, 330-374
R/RcodeBlock.R           15       0  100.00%
R/Renderer.R            113      37  67.26%   45-60, 121, 129, 138, 140-161
R/ReportCard.R           77       4  94.81%   180, 219, 224, 245
R/Reporter.R             94       1  98.94%   254
R/ResetModule.R          55       0  100.00%
R/SimpleReporter.R       30       0  100.00%
R/TableBlock.R            9       0  100.00%
R/TextBlock.R            13       0  100.00%
R/utils.R               171      80  53.22%   7, 38-97, 99, 102-109, 163, 175-177, 287-296
R/yaml_utils.R           81       2  97.53%   41, 239
R/zzz.R                  14      10  28.57%   2-13, 19
TOTAL                  1406     245  82.57%

Diff against main

Filename        Stmts    Miss  Cover
------------  -------  ------  -------
R/Renderer.R       -3     +15  -13.78%
TOTAL              -3     +15  -1.10%

Results for commit: 6e0aa94

Minimum allowed coverage is 80%

♻️ This comment has been updated with latest results

[github-actions]

Unit Tests Summary

    1 files    18 suites   17s ⏱️
204 tests 204 ✔️ 0 💤 0 ❌
346 runs  346 ✔️ 0 💤 0 ❌

Results for commit 6e0aa94.

♻️ This comment has been updated with latest results.

[pawelru]

👍