core/state: fix typo (ethereum#16370)

core/state/statedb.go

@@ -83,7 +83,7 @@ type StateDB struct {
 	lock sync.Mutex
 }
 
-// Create a new state from a given trie
+// Create a new state from a given trie.
 func New(root common.Hash, db Database) (*StateDB, error) {
 	tr, err := db.OpenTrie(root)
 	if err != nil {
@@ -110,7 +110,7 @@ func (self *StateDB) Error() error {
 	return self.dbErr
 }
 
-// Reset clears out all emphemeral state objects from the state db, but keeps
+// Reset clears out all ephemeral state objects from the state db, but keeps
 // the underlying state trie to avoid reloading data for the next operations.
 func (self *StateDB) Reset(root common.Hash) error {
 	tr, err := self.db.OpenTrie(root)