Fix failing CI builds for Docstring

Author: sjalkote

pandas/core/accessor.py

@@ -263,7 +263,7 @@ def _register_accessor(name: str, cls):
 
     * Must contain an init method that:
         * accepts a single {klass} object
-        * raises an {AttributeError} if the {klass} object does not have correctly
+        * raises an AttributeError if the {klass} object does not have correctly
         matching inputs for the accessor
     * Must contain a method for each access pattern.
         * The methods should be able to take any argument signature.