🐛 FIX: parse_directive_text when body followed by options

[chrisjsewell]

This was uncovered in executablebooks/markdown-it-docutils#28

The change does not break any existing tests, but I should add a test that would break without this change

[codecov]

Codecov Report

Merging #520 (64eb0b6) into master (e477a75) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #520   +/-   ##
=======================================
  Coverage   90.06%   90.06%           
=======================================
  Files          16       16           
  Lines        2103     2103           
=======================================
  Hits         1894     1894           
  Misses        209      209           

Flag	Coverage Δ
pytests	90.06% <100.00%> (ø)

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Impacted Files	Coverage Δ
myst_parser/parse_directives.py	87.64% <100.00%> (ø)

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[rowanc1]

So cool to see the JS implementation pushing on the python side. Love it. Thanks for making these changes here!

[chrisjsewell]

superseded by #580