More helpful Stata string length error.

[jtkiley]

The current error string when trying to write a string longer than 244 characters does not point users toward a solution that already exists: using the version=117 parameter.
xref #23564

• closes: no issue that I see
• tests: not needed; error string change only
• passes git diff upstream/master -u -- "*.py" | flake8 --diff
• whatsnew entry: too small a change?

[pep8speaks]

Hello @jtkiley! Thanks for submitting the PR.

• There are no PEP8 issues in the file pandas/io/stata.py !

[bashtage]

LGTM.

[jreback]

lgtm. ping on green.

[codecov]

Codecov Report

Merging #23629 into master will increase coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #23629      +/-   ##
==========================================
+ Coverage   92.23%   92.23%   +<.01%     
==========================================
  Files         161      161              
  Lines       51288    51322      +34     
==========================================
+ Hits        47304    47337      +33     
- Misses       3984     3985       +1

Flag	Coverage Δ
#multiple	90.62% <ø> (ø)	⬆️
#single	42.3% <ø> (+0.03%)	⬆️

Impacted Files	Coverage Δ
pandas/core/indexes/timedeltas.py	89.29% <0%> (-0.59%)	⬇️
pandas/core/tools/timedeltas.py	98.03% <0%> (-0.15%)	⬇️
pandas/core/indexes/datetimes.py	96.12% <0%> (-0.02%)	⬇️
pandas/core/arrays/datetimes.py	98.44% <0%> (-0.01%)	⬇️
pandas/core/arrays/timedeltas.py	95.08% <0%> (+1.29%)	⬆️

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[jtkiley]

@jreback All green. Thanks!

[jreback]

thanks @jtkiley