diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index f6f46299e277d..ea15e135455ba 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -111,6 +111,8 @@ repos:
             # Incorrect code-block / IPython directives
             |\.\.\ code-block\ ::
             |\.\.\ ipython\ ::
+            # directive should not have a space before ::
+            |\.\.\ \w+\ ::
 
             # Check for deprecated messages without sphinx directive
             |(DEPRECATED|DEPRECATE|Deprecated)(:|,|\.)
diff --git a/doc/source/user_guide/io.rst b/doc/source/user_guide/io.rst
index 204706f784fe8..cd7105d125947 100644
--- a/doc/source/user_guide/io.rst
+++ b/doc/source/user_guide/io.rst
@@ -3546,9 +3546,9 @@ with ``on_demand=True``.
 Specifying sheets
 +++++++++++++++++
 
-.. note :: The second argument is ``sheet_name``, not to be confused with ``ExcelFile.sheet_names``.
+.. note:: The second argument is ``sheet_name``, not to be confused with ``ExcelFile.sheet_names``.
 
-.. note :: An ExcelFile's attribute ``sheet_names`` provides access to a list of sheets.
+.. note:: An ExcelFile's attribute ``sheet_names`` provides access to a list of sheets.
 
 * The arguments ``sheet_name`` allows specifying the sheet or sheets to read.
 * The default value for ``sheet_name`` is 0, indicating to read the first sheet
diff --git a/pandas/core/algorithms.py b/pandas/core/algorithms.py
index 538d9b0348d5f..b12e5be7722d0 100644
--- a/pandas/core/algorithms.py
+++ b/pandas/core/algorithms.py
@@ -633,7 +633,7 @@ def factorize(
         is a Categorical. When `values` is some other pandas object, an
         `Index` is returned. Otherwise, a 1-D ndarray is returned.
 
-        .. note ::
+        .. note::
 
            Even if there's a missing value in `values`, `uniques` will
            *not* contain an entry for it.