RFR: 8336259: Wrong link to stylesheet.css in JavaDoc API documentation

[Nizar Benalla]

Can I please get a review for this small change, the relative link to the stylesheet isn't needed as it wasn't used anyway in the generated HTML. The correct link to the stylesheet is already in the generated HTML.

This is the difference between the generated docs before and after this change, by running `diff -r` on the docs before and after the change.


GeneratedDocs % diff -r 8336259-stylesheet old-docs           
diff -r 8336259-stylesheet/api/java.base/java/lang/doc-files/ValueBased.html old-docs/api/java.base/java/lang/doc-files/ValueBased.html
13a14
> <link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="Style">
diff -r 8336259-stylesheet/api/java.base/java/lang/doc-files/threadPrimitiveDeprecation.html old-docs/api/java.base/java/lang/doc-files/threadPrimitiveDeprecation.html
13a14
> <link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="Style">


Here is the link for the generated docs after the change, no visual change is seen but the erronous link is gone.
Value based classes [before](https://docs.oracle.com/en%2Fjava%2Fjavase%2F22%2Fdocs%2Fapi%2F%2F/java.base/java/lang/doc-files/ValueBased.html) - [after](https://cr.openjdk.org/~nbenalla/GeneratedDocs/8336259-stylesheet/api/java.base/java/lang/doc-files/ValueBased.html)

Java Thread Primitive Deprecation [before](https://docs.oracle.com/en%2Fjava%2Fjavase%2F22%2Fdocs%2Fapi%2F%2F/java.base/java/lang/doc-files/threadPrimitiveDeprecation.html) - [after](https://cr.openjdk.org/~nbenalla/GeneratedDocs/8336259-stylesheet/api/java.base/java/lang/doc-files/threadPrimitiveDeprecation.html)

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Commit messages:
 - (C)
 - remove incorrect link to stylesheet

Changes: https://git.openjdk.org/jdk/pull/20145/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20145&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8336259
  Stats: 4 lines in 2 files changed: 0 ins; 2 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/20145.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20145/head:pull/20145

PR: https://git.openjdk.org/jdk/pull/20145