Fix some typos

README.md

@@ -505,7 +505,7 @@ Existing pull requests and issues were transferred, please fork and continue to
 
 # License
 
-This gem is licensed unter the [MIT license](LICENSE.md).
+This gem is licensed under the [MIT license](LICENSE.md).
 
 ## Release information
 

lib/json-schema/util/uuid.rb

@@ -260,7 +260,7 @@ def version
       end
 
       # Two  UUIDs  are  said  to  be  equal if  and  only  if  their  (byte-order
-      # canonicalized) integer representations are equivallent.  Refer RFC4122 for
+      # canonicalized) integer representations are equivalent.  Refer RFC4122 for
       # details.
       def == other
         to_i == other.to_i

test/custom_format_test.rb

@@ -113,7 +113,7 @@ def test_override_default_format
 
       data['a'] = '42'
       JSON::Validator.register_format_validator('ipv6', @format_proc, [version])
-      assert(JSON::Validator.validate(schema, data), "#{prefix} succeeds with overriden default format and correct data")
+      assert(JSON::Validator.validate(schema, data), "#{prefix} succeeds with overridden default format and correct data")
 
       JSON::Validator.deregister_format_validator('ipv6', [version])
       data['a'] = '2001:db8:85a3:0:0:8a2e:370:7334'

test/uri_util_test.rb

@@ -196,7 +196,7 @@ def test_ref_addressable_uri_with_host_and_path
     assert_equal Addressable::URI.parse('http://www.example.com/hello/world'), JSON::Util::URI.absolutize_ref(uri, base)
   end
 
-  def test_ref_addressable_uri_with_shceme_host_and_path
+  def test_ref_addressable_uri_with_scheme_host_and_path
     uri = Addressable::URI.new(scheme: 'https', host: 'foo-bar.com', path: '/hello/world')
     base = 'http://www.example.com/a/#b'