chore: remove redundant words in comment (#61759)

Signed-off-by: ianlv <sunlvyun@outlook.com>

Author: ianlv

doc/source/user_guide/io.rst

@@ -5432,7 +5432,7 @@ A simple example loading all data from an Iceberg table ``my_table`` defined in
     df = pd.read_iceberg("my_table", catalog_name="my_catalog")
 
 Catalogs must be defined in the ``.pyiceberg.yaml`` file, usually in the home directory.
-It is possible to to change properties of the catalog definition with the
+It is possible to change properties of the catalog definition with the
 ``catalog_properties`` parameter:
 
 .. code-block:: python

pandas/compat/pickle_compat.py

@@ -36,7 +36,7 @@
         "pandas._libs.internals",
         "_unpickle_block",
     ),
-    # Avoid Cython's warning "contradiction to to Python 'class private name' rules"
+    # Avoid Cython's warning "contradiction to Python 'class private name' rules"
     ("pandas._libs.tslibs.nattype", "__nat_unpickle"): (
         "pandas._libs.tslibs.nattype",
         "_nat_unpickle",