chore: fix some minor issues in comments (#2645)

Author: houpo-bob

config/storage.yml

@@ -14,7 +14,7 @@ local:
 #   region: us-east-1
 #   bucket: your_own_bucket
 
-# Remember not to checkin your GCS keyfile to a repository
+# Remember not to check in your GCS keyfile to a repository
 # google:
 #   service: GCS
 #   project: your_project

test/utils/ckb_utils_test.rb

@@ -280,7 +280,7 @@ class CkbUtilsTest < ActiveSupport::TestCase
     assert_nil CkbUtils.parse_dao(nil)
   end
 
-  test ".parse_dao should return one open sturct with right attributes" do
+  test ".parse_dao should return one open struct with right attributes" do
     dao = "0x80d6ccc02604d52ebc30325a84902300e7d511536bb20a00002b5625ba150007"
     bin_dao = CKB::Utils.hex_to_bin(dao)
     c_i = bin_dao[0..7].unpack("Q<").pack("Q>").unpack1("H*").hex