Merge #13742: doc: Adjust bitcoincore.org links

fa45151 doc: Adjust bitcoincore.org links (MarcoFalke)

Pull request description:

  Minor adjustments to our https://bitcoincore.org/ links:

  Mainly adding links of the Bitcoin Core Github mirror and Bitcoin Core website to the doxygen introduction. (See e.g. current master: https://dev.visucore.com/bitcoin/doxygen/index.html). Also removing the link to bitcoin.org, to not imply there is only one resource that educates about bitcoin.

Tree-SHA512: d4d50f6de4d4b412203934e947889ebc0f564747e26f9190a2cff64234bf9fc3d56b8f056651550ce568170fba448559fa005959ef4e504d990e2fbc96a2ed77

Author: laanwj

README.md

@@ -15,7 +15,7 @@ out collectively by the network. Bitcoin Core is the name of open source
 software which enables the use of this currency.
 
 For more information, as well as an immediately useable, binary version of
-the Bitcoin Core software, see https://bitcoin.org/en/download, or read the
+the Bitcoin Core software, see https://bitcoincore.org/en/download/, or read the
 [original whitepaper](https://bitcoincore.org/bitcoin.pdf).
 
 License

src/bitcoind.cpp

@@ -29,12 +29,14 @@
  *
  * \section intro_sec Introduction
  *
- * This is the developer documentation of the reference client for an experimental new digital currency called Bitcoin (https://www.bitcoin.org/),
+ * This is the developer documentation of the reference client for an experimental new digital currency called Bitcoin,
  * which enables instant payments to anyone, anywhere in the world. Bitcoin uses peer-to-peer technology to operate
  * with no central authority: managing transactions and issuing money are carried out collectively by the network.
  *
  * The software is a community-driven open source project, released under the MIT license.
  *
+ * See https://github.com/bitcoin/bitcoin and https://bitcoincore.org/ for further information about the project.
+ *
  * \section Navigation
  * Use the buttons <code>Namespaces</code>, <code>Classes</code> or <code>Files</code> at the top of the page to start navigating the code.
  */

src/test/netbase_tests.cpp

@@ -82,10 +82,10 @@ bool static TestSplitHost(std::string test, std::string host, int port)
 
 BOOST_AUTO_TEST_CASE(netbase_splithost)
 {
-    BOOST_CHECK(TestSplitHost("www.bitcoin.org", "www.bitcoin.org", -1));
-    BOOST_CHECK(TestSplitHost("[www.bitcoin.org]", "www.bitcoin.org", -1));
-    BOOST_CHECK(TestSplitHost("www.bitcoin.org:80", "www.bitcoin.org", 80));
-    BOOST_CHECK(TestSplitHost("[www.bitcoin.org]:80", "www.bitcoin.org", 80));
+    BOOST_CHECK(TestSplitHost("www.bitcoincore.org", "www.bitcoincore.org", -1));
+    BOOST_CHECK(TestSplitHost("[www.bitcoincore.org]", "www.bitcoincore.org", -1));
+    BOOST_CHECK(TestSplitHost("www.bitcoincore.org:80", "www.bitcoincore.org", 80));
+    BOOST_CHECK(TestSplitHost("[www.bitcoincore.org]:80", "www.bitcoincore.org", 80));
     BOOST_CHECK(TestSplitHost("127.0.0.1", "127.0.0.1", -1));
     BOOST_CHECK(TestSplitHost("127.0.0.1:8333", "127.0.0.1", 8333));
     BOOST_CHECK(TestSplitHost("[127.0.0.1]", "127.0.0.1", -1));