Fixed other docstrings along the way

Author: awojno-bloomberg

ci/code_checks.sh

@@ -158,21 +158,15 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
         -i "pandas.Series.sparse.sp_values SA01" \
         -i "pandas.Series.sparse.to_coo PR07,RT03,SA01" \
         -i "pandas.Series.std PR01,RT03,SA01" \
-        -i "pandas.Series.str.ljust RT03,SA01" \
-        -i "pandas.Series.str.lower RT03" \
         -i "pandas.Series.str.lstrip RT03" \
         -i "pandas.Series.str.match RT03" \
         -i "pandas.Series.str.normalize RT03,SA01" \
         -i "pandas.Series.str.partition RT03" \
         -i "pandas.Series.str.repeat SA01" \
         -i "pandas.Series.str.replace SA01" \
-        -i "pandas.Series.str.rjust RT03,SA01" \
         -i "pandas.Series.str.rpartition RT03" \
         -i "pandas.Series.str.rstrip RT03" \
         -i "pandas.Series.str.strip RT03" \
-        -i "pandas.Series.str.swapcase RT03" \
-        -i "pandas.Series.str.title RT03" \
-        -i "pandas.Series.str.upper RT03" \
         -i "pandas.Series.str.wrap RT03,SA01" \
         -i "pandas.Series.str.zfill RT03" \
         -i "pandas.Series.struct.dtypes SA01" \