update spec.homepage

Author: kenichiice

test-unit-runner-junitxml.gemspec

@@ -10,7 +10,7 @@ Gem::Specification.new do |spec|
 
   spec.summary       = %q{A test-unit runner that reports test result in JUnit XML format.}
   #spec.description   = %q{TODO: Write a longer description or delete this line.}
-  spec.homepage      = "https://github.com/kenichiice/test-unit-runner-junitxml"
+  spec.homepage      = "https://github.com/test-unit/test-unit-runner-junitxml"
   spec.license       = "MIT"
 
   # Specify which files should be added to the gem when it is released.