Update ruby-debug-ide.gemspec

Correct Homepage URL

Author: nelsonjchen

ruby-debug-ide.gemspec

@@ -22,7 +22,7 @@ end
 Gem::Specification.new do |spec|
   spec.name = "ruby-debug-ide"
 
-  spec.homepage = "https://github.com/JetBrains/ruby-debug-ide"
+  spec.homepage = "https://github.com/ruby-debug/ruby-debug-ide"
   spec.summary = "IDE interface for ruby-debug."
   spec.description = <<-EOF
 An interface which glues ruby-debug to IDEs like Eclipse (RDT), NetBeans and RubyMine.
@@ -47,4 +47,4 @@ EOF
 
   # rdoc
   spec.has_rdoc = false
-end
+end