cmd: fix capitalized error strings

cmd/evm/internal/t8ntool/transition.go

@@ -213,7 +213,7 @@ func applyShanghaiChecks(env *stEnv, chainConfig *params.ChainConfig) error {
 		return nil
 	}
 	if env.Withdrawals == nil {
-		return NewError(ErrorConfig, errors.New("Shanghai config but missing 'withdrawals' in env section"))
+		return NewError(ErrorConfig, errors.New("shanghai config but missing 'withdrawals' in env section"))
 	}
 	return nil
 }

cmd/workload/filtertest.go

@@ -207,7 +207,7 @@ func (fq *filterQuery) isWildcard() bool {
 func (fq *filterQuery) calculateHash() common.Hash {
 	enc, err := rlp.EncodeToBytes(&fq.results)
 	if err != nil {
-		exit(fmt.Errorf("Error encoding logs: %v", err))
+		exit(fmt.Errorf("error encoding logs: %v", err))
 	}
 	return crypto.Keccak256Hash(enc)
 }

cmd/workload/filtertestgen.go

@@ -352,7 +352,7 @@ func (s *filterTestGen) randomQuery() *filterQuery {
 func (s *filterTestGen) writeQueries() {
 	file, err := os.Create(s.queryFile)
 	if err != nil {
-		exit(fmt.Errorf("Error creating filter test query file %s: %v", s.queryFile, err))
+		exit(fmt.Errorf("error creating filter test query file %s: %v", s.queryFile, err))
 		return
 	}
 	json.NewEncoder(file).Encode(&s.queries)

cmd/workload/filtertestperf.go

@@ -156,7 +156,7 @@ func (st *bucketStats) print(name string) {
 func writeErrors(errorFile string, errors []*filterQuery) {
 	file, err := os.Create(errorFile)
 	if err != nil {
-		exit(fmt.Errorf("Error creating filter error file %s: %v", errorFile, err))
+		exit(fmt.Errorf("error creating filter error file %s: %v", errorFile, err))
 		return
 	}
 	defer file.Close()