Use https://grpc.io consistently as the canonical URL
diff --git a/gRPC-ProtoRPC.podspec b/gRPC-ProtoRPC.podspec
index d6749e0..2317aac 100644
--- a/gRPC-ProtoRPC.podspec
+++ b/gRPC-ProtoRPC.podspec
@@ -24,7 +24,7 @@
version = '1.5.0-dev'
s.version = version
s.summary = 'RPC library for Protocol Buffers, based on gRPC'
- s.homepage = 'http://www.grpc.io'
+ s.homepage = 'https://grpc.io'
s.license = 'Apache License, Version 2.0'
s.authors = { 'The gRPC contributors' => 'grpc-packages@google.com' }