DOC Correcting EX02 errors (#51198)

Correcting EX02 errors

Author: DeaMariaLeon

ci/code_checks.sh

@@ -597,10 +597,7 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
         pandas.api.types.is_datetime64_dtype \
         pandas.api.types.is_datetime64_ns_dtype \
         pandas.api.types.is_datetime64tz_dtype \
-        pandas.api.types.is_dict_like \
-        pandas.api.types.is_file_like \
         pandas.api.types.is_float_dtype \
-        pandas.api.types.is_hashable \
         pandas.api.types.is_int64_dtype \
         pandas.api.types.is_integer_dtype \
         pandas.api.types.is_interval_dtype \

pandas/core/dtypes/inference.py

@@ -119,6 +119,7 @@ def is_file_like(obj) -> bool:
     Examples
     --------
     >>> import io
+    >>> from pandas.api.types import is_file_like
     >>> buffer = io.StringIO("data")
     >>> is_file_like(buffer)
     True
@@ -275,6 +276,7 @@ def is_dict_like(obj) -> bool:
 
     Examples
     --------
+    >>> from pandas.api.types import is_dict_like
     >>> is_dict_like({1: 2})
     True
     >>> is_dict_like([1, 2, 3])
@@ -336,6 +338,7 @@ def is_hashable(obj) -> bool:
     Examples
     --------
     >>> import collections
+    >>> from pandas.api.types import is_hashable
     >>> a = ([],)
     >>> isinstance(a, collections.abc.Hashable)
     True