Apply suggestions from code review

Co-authored-by: spencer <[email protected]>

Author: SamWilsn

src/ethereum_spec_tools/evm_tools/t8n/__init__.py

@@ -118,7 +118,7 @@ def get(
         blob_schedule_max: U64 | None = None,
     ) -> Hardfork:
         """
-        Search the cache for a maching hardfork, or create one if it doesn't
+        Search the cache for a matching hardfork, or create one if it doesn't
         exist.
         """
         cache_key = (

src/ethereum_spec_tools/evm_tools/utils.py

@@ -30,6 +30,15 @@
     "BPO1": {
         "fork_blocks": [("osaka", 0)],
     },
+    "BPO2": {
+        "fork_blocks": [("osaka", 0)],
+    },
+    "BPO3": {
+        "fork_blocks": [("osaka", 0)],
+    },
+    "BPO4": {
+        "fork_blocks": [("osaka", 0)],
+    },
     "FrontierToHomesteadAt5": {
         "fork_blocks": [("frontier", 0), ("homestead", 5)],
     },