tests/eip4788: Small changes.

Author: spencer-tb

tests/cancun/eip4788_beacon_root/common.py

@@ -41,7 +41,7 @@ def expected_storage(
     - success or failure of the call
     - validity of the timestamp input used within the call
     """
-    storage: Storage.StorageDictType = dict()
+    storage = Storage()
     # beacon root precompile call is successful
     if valid_call:
         storage[0] = 1

tests/cancun/eip4788_beacon_root/test_beacon_root_precompile.py

@@ -84,7 +84,7 @@ def test_beacon_root_precompile_calls(
     - `DELEGATECALL`
     - `CALLCODE`
     - `STATICCALL`
-    for diffent call gas amounts:
+    for different call gas amounts:
     - exact gas (valid call)
     - extra gas (valid call)
     - insufficient gas (invalid call)