@HotSpotIntrinsicCandidate is not Oracle-specific

The doc comment for the @jdk.internal.HotSpotIntrinsicCandidate
annotation says that it is "specific to the Oracle Java HotSpot Virtual
Machine implementation". That's not true. The annotation is defined
in the open-source HotSpot repository, so it is in fact available in all
implementations derived from that code, whether from Oracle or from other
vendors.

Suggested fix:

--- a/src/java.base/share/classes/jdk/internal/HotSpotIntrinsicCandidate.java
+++ b/src/java.base/share/classes/jdk/internal/HotSpotIntrinsicCandidate.java
@@ -28,8 +28,8 @@
 import java.lang.annotation.*;
 
 /**
- * The {@code @HotSpotIntrinsicCandidate} annotation is specific to the Oracle Java
- * HotSpot Virtual Machine implementation and indicates that an annotated method
+ * The {@code @HotSpotIntrinsicCandidate} annotation is specific to the
+ * HotSpot Virtual Machine. It indicates that an annotated method
  * may be (but is not guaranteed to be) intrinsified by the HotSpot VM. A method
  * is intrinsified if the HotSpot VM replaces the annotated method with hand-written
  * assembly and/or hand-written compiler IR -- a compiler intrinsic -- to improve