[PATCH] add a reference to the official SPDX License List

[Brian Inglis]

Spec link is already 404, so brittle, not necessarily current, and that licence 
list appendix is only informative and not current, so link to the actual current 
license list instead:

	https://spdx.org/licenses/

and provide a link to the generic current spec page which offers different formats:

	https://spdx.dev/specifications/#current-version

with something like (hacked from previous email):

diff --git a/packaging-hint-files.html b/packaging-hint-files.html
--- a/packaging-hint-files.html
+++ b/packaging-hint-files.html
@@ -406,7 +406,7 @@ version: <i>version</i>
      <p>
-      <code>license</code> is
-      a <a href="https://spdx.github.io/spdx-spec/SPDX-license-expressions/">SPDX
-      license expression</a> for the <a href="https://spdx.org/licenses/">open 
source license(s)</a> of the package
+      <a href="https://spdx.org/licenses/"><code>license</code></a> is an SPDX
+      <a href="https://spdx.dev/specifications/#current-version">license 
expression</a>
+      for the open source license(s)</a> of the package
        source code.
      </p>
    </li>

-- 
Take care. Thanks, Brian Inglis			Calgary, Alberta, Canada

La perfection est atteinte			Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter	not when there is no more to add
mais lorsqu'il n'y a plus rien à retirer	but when there is no more to cut
			-- Antoine de Saint-Exupéry