docs: fix grammar in src/ethereum (non-forks)

repo_subpaths_for_grammar_check.md

@@ -42,7 +42,7 @@ Status legend: `[ ]` pending, `[~]` in progress, `[x]` complete
 
 ## src/ethereum (non-forks)
 
-- [ ] `src/ethereum/*.py`, `src/ethereum/crypto/*.py`, `src/ethereum/utils/*.py` (~15 files)
+- [x] `src/ethereum/*.py`, `src/ethereum/crypto/*.py`, `src/ethereum/utils/*.py` (~15 files)
 
 ## src/ethereum_spec_tools
 

src/ethereum/ethash.py

@@ -398,8 +398,8 @@ def hashimoto_light(
     dataset_size: Uint,
 ) -> Tuple[Bytes, Hash32]:
     """
-    Run the [`hashimoto`] algorithm by generating dataset item using the cache
-    instead of loading the full dataset into main memory.
+    Run the [`hashimoto`] algorithm by generating a dataset item using the
+    cache instead of loading the full dataset into main memory.
 
     #### Parameters
 

src/ethereum/exceptions.py

@@ -18,7 +18,7 @@ class InvalidBlock(EthereumException):
 
 class StateWithEmptyAccount(EthereumException):
     """
-    Thrown when the state has empty account.
+    Thrown when the state has an empty account.
     """