DOC: fix pandas-dev#48911, add name parameter to the IntervalIndex

Author: silviaovo

pandas/core/indexes/interval.py

@@ -237,7 +237,7 @@ def __new__(
         % {
             "klass": "IntervalIndex",
             "name": textwrap.dedent(
-            """
+                """
              name : str, optional
                   Name of the resulting IntervalIndex."""
             ),
@@ -272,7 +272,7 @@ def from_breaks(
         % {
             "klass": "IntervalIndex",
             "name": textwrap.dedent(
-            """
+                """
              name : str, optional
                   Name of the resulting IntervalIndex."""
             ),
@@ -308,7 +308,7 @@ def from_arrays(
         % {
             "klass": "IntervalIndex",
             "name": textwrap.dedent(
-            """
+                """
              name : str, optional
                   Name of the resulting IntervalIndex."""
             ),