refactor: simplify FindElementsMixin._get_expression_type startswith checks into single tuple

Author: Cvoluj

pydoll/elements/mixins/find_elements_mixin.py

@@ -478,7 +478,7 @@ def _get_expression_type(expression: str) -> By:
         - XPath: starts with ./, or /
         - Default: CSS_SELECTOR
         """
-        if any([expression.startswith('./'), expression.startswith('/'), expression.startswith('(/')]):
+        if expression.startswith(('./', '/', '(/')):
             return By.XPATH
 
         return By.CSS_SELECTOR