The HotSpotInternals wiki was moved:

OLD: https://wikis.oracle.com/display/HotSpotInternals/
NEW: https://wiki.openjdk.java.net/display/HotSpot/

The following links should be fixed:

===
$ find . |xargs grep -s wikis.oracle.com
./hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.java/src/org/graalvm/compiler/java/BytecodeParser.java: * https://wikis.oracle.com/display/HotSpotInternals/Method+handles +and+invokedynamic
./hotspot/src/share/tools/IdealGraphVisualizer/README.md:https://wikis.oracle.com/display/HotSpotInternals/IdealGraphVisualizer.
./hotspot/src/share/tools/LogCompilation/README:https://wikis.oracle.com/display/HotSpotInternals/LogCompilation+overview
./hotspot/src/share/tools/LogCompilation/README:https://wikis.oracle.com/display/HotSpotInternals/PrintCompilation
./hotspot/src/share/tools/LogCompilation/README:https://wikis.oracle.com/display/HotSpotInternals/LogCompilation+tool
$
===