DOC: Typos in pandas.core.groupby.groupby.GroupBy.rank

[peterpanmj]

Problem description

Typos in pandas.core.groupby.groupby.GroupBy.rank

pandas/pandas/core/groupby/groupby.py

Line 1848 in 5edc5c4

method : {'average', 'min', 'max', 'first', 'dense'}, efault 'average'

'default'

pandas/pandas/core/groupby/groupby.py

Line 1854 in 5edc5c4

method : {'keep', 'top', 'bottom'}, default 'keep'

‘method’ is mentioned twice

Output of pd.show_versions()

INSTALLED VERSIONS ------------------ commit: acc89db python: 3.6.3.final.0 python-bits: 64 OS: Windows OS-release: 10 machine: AMD64 processor: Intel64 Family 6 Model 94 Stepping 3, GenuineIntel byteorder: little LC_ALL: None LANG: en LOCALE: None.None

pandas: 0.23.0.dev0+741.gacc89dbdb
pytest: 3.2.3
pip: 9.0.1
setuptools: 36.5.0.post20170921
Cython: 0.27.2
numpy: 1.13.3
scipy: 0.19.1
pyarrow: None
xarray: None
IPython: 6.2.1
sphinx: 1.6.3
patsy: 0.4.1
dateutil: 2.6.1
pytz: 2017.3
blosc: None
bottleneck: 1.2.1
tables: 3.4.2
numexpr: 2.6.4
feather: None
matplotlib: 2.1.0
openpyxl: 2.5.0b1
xlrd: 1.0.0
xlwt: 1.3.0
xlsxwriter: 1.0.2
lxml: 4.1.1
bs4: 4.6.0
html5lib: 0.999999999
sqlalchemy: 1.1.13
pymysql: 0.7.11.None
psycopg2: None
jinja2: 2.9.6
s3fs: None
fastparquet: None
pandas_gbq: None
pandas_datareader: None