8356269: Fix broken web-links after JDK-8295470

Reviewed-by: chagedorn, epeter

test/hotspot/jtreg/applications/jcstress/README

@@ -37,5 +37,5 @@ The */Test.java files should never be modified directly, because they are
 generated by TestGenerator and therefore all required changes must be made in
 that class.
 
-[1] https://wiki.openjdk.org/display/CodeTools/jcstress
+[1] https://github.com/openjdk/jcstress
 

test/hotspot/jtreg/applications/jcstress/TestGenerator.java

@@ -56,7 +56,7 @@ import java.util.function.Predicate;
  * added to classpath. One can replace @notest by @test in jtreg test
  * description above to run this class with jtreg.
  *
- * @see <a href=https://wiki.openjdk.org/display/CodeTools/jcstress>jcstress</a>
+ * @see <a href="https://github.com/openjdk/jcstress">jcstress</a>
  */
 public class TestGenerator {
     private static final String COPYRIGHT;

test/hotspot/jtreg/compiler/membars/DekkerTest.java

@@ -47,7 +47,7 @@ public class DekkerTest {
     /*
       Read After Write Test (basically a simple Dekker test with volatile variables)
       Derived from the original jcstress test, available at:
-        hhttps://git.openjdk.org/jcstress/commit/15acd86
+        https://git.openjdk.org/jcstress/commit/15acd86
         tests-custom/src/main/java/org/openjdk/jcstress/tests/volatiles/DekkerTest.java
      */