Remove unneeded 'send_' in docs

Author: iarmhi

src/SeleniumLibrary/keywords/element.py

@@ -923,7 +923,6 @@ def press_key(self, locator: Union[WebElement, str], key: str):
         using the selenium send_keys method. Although one is not recommended
         over the other if `Press Key` does not work we recommend trying
         `Press Keys`.
-        send_
         """
         if key.startswith("\\") and len(key) > 1:
             key = self._map_ascii_key_code_to_key(int(key[1:]))