DOC: Fixes flake8 issues in whatsnew v0.13.* pandas-dev#24256

Another attempt to fix the merge conflict with setup.cfg

Author: Seuss27

setup.cfg

@@ -45,7 +45,7 @@ ignore = E402,  # module level import not at top of file
          E703,  # statement ends with a semicolon
 
 exclude =
-	doc/source/whatsnew/v0.7.0.rst
+    doc/source/whatsnew/v0.7.0.rst
     doc/source/whatsnew/v0.7.3.rst
     doc/source/whatsnew/v0.8.0.rst
     doc/source/whatsnew/v0.9.0.rst
@@ -54,11 +54,6 @@ exclude =
     doc/source/whatsnew/v0.10.1.rst
     doc/source/whatsnew/v0.11.0.rst
     doc/source/whatsnew/v0.12.0.rst
-<<<<<<< HEAD
-=======
-    doc/source/whatsnew/v0.13.0.rst
-    doc/source/whatsnew/v0.13.1.rst
->>>>>>> parent of bb06bdb63... DOC: Closes #24256 Fix flake8 issues in whatsnew v0.13*
     doc/source/whatsnew/v0.14.0.rst
     doc/source/whatsnew/v0.14.1.rst
     doc/source/whatsnew/v0.15.0.rst
@@ -71,11 +66,16 @@ exclude =
     doc/source/whatsnew/v0.17.1.rst
     doc/source/whatsnew/v0.18.0.rst
     doc/source/whatsnew/v0.18.1.rst
+    doc/source/whatsnew/v0.19.0.rst
+    doc/source/whatsnew/v0.20.0.rst
+    doc/source/whatsnew/v0.21.0.rst
+    doc/source/whatsnew/v0.23.1.rst
+    doc/source/whatsnew/v0.23.2.rst
     doc/source/basics.rst
     doc/source/contributing_docstring.rst
     doc/source/enhancingperf.rst
     doc/source/groupby.rst
-	doc/source/indexing.rst
+    doc/source/indexing.rst
     doc/source/missing_data.rst
     doc/source/options.rst
     doc/source/release.rst