Update gem homepage link

Author: toshimaru

serverkit-vscode.gemspec

@@ -12,7 +12,7 @@ Gem::Specification.new do |spec|
 
   spec.summary       = %q{Serverkit plug-in for VSCode.}
   spec.description   = %q{Serverkit plug-in for VSCode.}
-  spec.homepage      = "https://github.com/toshimaru/serverkit-vscode"
+  spec.homepage      = "https://github.com/serverkit/serverkit-vscode"
   spec.license       = "MIT"
 
   # Specify which files should be added to the gem when it is released.