Upgrade all the .arcconfigs to https.

llvm-svn: 275409
GitOrigin-RevId: 56a46bc68058e78c6309f46e5aafd18edc72b553
diff --git a/.arcconfig b/.arcconfig
index 04b9b60..38ac279 100644
--- a/.arcconfig
+++ b/.arcconfig
@@ -1,4 +1,4 @@
 {
   "project_id" : "llgo",
-  "conduit_uri" : "http://reviews.llvm.org/"
+  "conduit_uri" : "https://reviews.llvm.org/"
 }