DOC: Fix intendation of versionadded and typo (#51468)

Author: phofl

pandas/core/generic.py

@@ -4661,7 +4661,7 @@ def add_prefix(self: NDFrameT, prefix: str, axis: Axis | None = None) -> NDFrame
         axis : {{0 or 'index', 1 or 'columns', None}}, default None
             Axis to add prefix on
 
-             .. versionadded:: 2.0.0
+            .. versionadded:: 2.0.0
 
         Returns
         -------
@@ -4735,7 +4735,7 @@ def add_suffix(self: NDFrameT, suffix: str, axis: Axis | None = None) -> NDFrame
         axis : {{0 or 'index', 1 or 'columns', None}}, default None
             Axis to add suffix on
 
-             .. versionadded:: 2.0.0
+            .. versionadded:: 2.0.0
 
         Returns
         -------
@@ -7118,7 +7118,7 @@ def backfill(
 
         .. deprecated:: 2.0
 
-            {klass}.backfill is deprecated. Use {klass}.backfill instead.
+            {klass}.backfill is deprecated. Use {klass}.bfill instead.
 
         Returns
         -------

pandas/io/excel/_base.py

@@ -251,15 +251,15 @@
     more strings (corresponding to the columns defined by `parse_dates`) as
     arguments.
 
-  .. deprecated:: 2.0.0
-   Use ``date_format`` instead, or read in as ``object`` and then apply
-   :func:`to_datetime` as-needed.
+   .. deprecated:: 2.0.0
+      Use ``date_format`` instead, or read in as ``object`` and then apply
+      :func:`to_datetime` as-needed.
 date_format : str or dict of column -> format, default ``None``
    If used in conjunction with ``parse_dates``, will parse dates according to this
    format. For anything more complex,
    please read in as ``object`` and then apply :func:`to_datetime` as-needed.
 
-    .. versionadded:: 2.0.0
+   .. versionadded:: 2.0.0
 thousands : str, default None
     Thousands separator for parsing string columns to numeric.  Note that
     this parameter is only necessary for columns stored as TEXT in Excel,

pandas/io/parquet.py

@@ -503,7 +503,7 @@ def read_parquet(
             ``pd.set_option("mode.dtype_backend", "pyarrow")`` to use
             pyarrow-backed nullable dtypes (using ``pd.ArrowDtype``).
 
-            .. versionadded:: 2.0.0
+        .. versionadded:: 2.0.0
 
     **kwargs
         Any additional kwargs are passed to the engine.

pandas/io/parsers/readers.py

@@ -262,15 +262,15 @@
     more strings (corresponding to the columns defined by `parse_dates`) as
     arguments.
 
-  .. deprecated:: 2.0.0
-   Use ``date_format`` instead, or read in as ``object`` and then apply
-   :func:`to_datetime` as-needed.
+   .. deprecated:: 2.0.0
+      Use ``date_format`` instead, or read in as ``object`` and then apply
+      :func:`to_datetime` as-needed.
 date_format : str or dict of column -> format, default ``None``
    If used in conjunction with ``parse_dates``, will parse dates according to this
    format. For anything more complex,
    please read in as ``object`` and then apply :func:`to_datetime` as-needed.
 
-    .. versionadded:: 2.0.0
+   .. versionadded:: 2.0.0
 dayfirst : bool, default False
     DD/MM format dates, international and European format.
 cache_dates : bool, default True