Update the bug that's blocking libc++fs for vendor code. am: bb48d640b3 am: 218012a3aa am: d52c2703e3

Original change: https://android-review.googlesource.com/c/platform/external/libcxx/+/1792712

Change-Id: I9f51185128f8b5e6a41a2fa7d39860828b9407e4
diff --git a/Android.bp b/Android.bp
index 2686464..e29a44c 100644
--- a/Android.bp
+++ b/Android.bp
@@ -195,7 +195,7 @@
 
 // Not available to vendor modules until libc++ is updated and this library is
 // merged into libc++ proper.
-// https://issuetracker.google.com/147469372
+// Follow http://b/175635923 for progress.
 cc_library_static {
     name: "libc++fs",
     ramdisk_available: true,