Update v2.3.0.rst

fix backticks

Author: corbanvilla

doc/source/whatsnew/v2.3.0.rst

@@ -48,7 +48,7 @@ These are bug fixes that might have notable behavior changes.
 
 .. _whatsnew_230.notable_bug_fixes.notable_bug_fix1:
 
-- The `to_latex` is now fixed for hidden multiindex dataframes (:issue:`52218`)
+- The ``to_latex`` function is now fixed for hidden multiindex dataframes (:issue:`52218`)
 
 notable_bug_fix1
 ^^^^^^^^^^^^^^^^