[doc] Update bitcoin-core GitHub links

contrib/devtools/README.md

@@ -48,9 +48,9 @@ the commit it claims to have been updated to.
 
 To use, make sure that you have fetched the upstream repository branch in which the subtree is
 maintained:
-* for `src/secp256k1`: https://github.com/bitcoin/secp256k1.git (branch master)
-* for `src/leveldb`: https://github.com/bitcoin/leveldb.git (branch bitcoin-fork)
-* for `src/univalue`: https://github.com/bitcoin/univalue.git (branch master)
+* for `src/secp256k1`: https://github.com/bitcoin-core/secp256k1.git (branch master)
+* for `src/leveldb`: https://github.com/bitcoin-core/leveldb.git (branch bitcoin-fork)
+* for `src/univalue`: https://github.com/bitcoin-core/univalue.git (branch master)
 
 Usage: `git-subtree-check.sh DIR COMMIT`
 

contrib/gitian-descriptors/gitian-osx-signer.yml

@@ -8,7 +8,7 @@ packages:
 - "faketime"
 reference_datetime: "2016-01-01 00:00:00"
 remotes:
-- "url": "https://github.com/bitcoin/bitcoin-detached-sigs.git"
+- "url": "https://github.com/bitcoin-core/bitcoin-detached-sigs.git"
   "dir": "signature"
 files:
 - "bitcoin-osx-unsigned.tar.gz"

contrib/gitian-descriptors/gitian-win-signer.yml

@@ -9,7 +9,7 @@ packages:
 - "autoconf"
 reference_datetime: "2016-01-01 00:00:00"
 remotes:
-- "url": "https://github.com/bitcoin/bitcoin-detached-sigs.git"
+- "url": "https://github.com/bitcoin-core/bitcoin-detached-sigs.git"
   "dir": "signature"
 files:
 - "osslsigncode-1.7.1.tar.gz"