DOC/CLN: Fix typo in docstring

[dsaxton]

Fixes a very minor typo in the pandas/core.py docstring

[codecov]

Codecov Report

Merging #1658 into master will decrease coverage by 2.59%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master    #1658     +/-   ##
=========================================
- Coverage   89.88%   87.28%   -2.6%     
=========================================
  Files         185      185             
  Lines       27207    27207             
  Branches     2337     2337             
=========================================
- Hits        24455    23748    -707     
- Misses       2346     3052    +706     
- Partials      406      407      +1

Impacted Files	Coverage Δ
ibis/pandas/core.py	100% <ø> (ø)	⬆️
ibis/bigquery/tests/test_client.py	25.87% <0%> (-73.55%)	⬇️
ibis/bigquery/tests/test_compiler.py	39.89% <0%> (-60.11%)	⬇️
ibis/bigquery/udf/tests/test_udf_execute.py	28% <0%> (-54%)	⬇️
ibis/bigquery/client.py	42.91% <0%> (-52.37%)	⬇️
ibis/bigquery/compiler.py	58.82% <0%> (-38.61%)	⬇️
ibis/bigquery/tests/conftest.py	70.27% <0%> (-16.22%)	⬇️
ibis/bigquery/udf/api.py	80.48% <0%> (-14.64%)	⬇️
ibis/impala/compiler.py	91.04% <0%> (-5.75%)	⬇️
ibis/tests/all/test_temporal.py	95.45% <0%> (-4.55%)	⬇️
... and 10 more

[kszucs]

The build failure is unrelated. Thanks @dsaxton !

[cpcloud]

Thanks @dsaxton, merging!

[dsaxton]

@cpcloud @kszucs NP, glad to help!