docs: unbreak spec build

I've created a homebrew tap with sdop and xfpt in it, so I can install
those more easily on macOS in the future, and now have bothered actually
building the docs.  `.url()` should have been `&url()` in two places.

The `make spec.pdf` pipeline yields a document where those are not
clickable links, but if i use `make spec.ps` and let macOS auto-convert
to PDF upon open, those are proper clickable hyperlinks.  So this switch
is definitely for the better.

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 8ae08e78709ba0790db3f183570b3e83ca9fffad..08f27ddaf9e0ef56fc6818f7a419a60a1fb56e8d 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -509,7 +509,7 @@ message to the &'exim-dev'& mailing list and have it discussed.
 .cindex "distribution" "https site"
 The master distribution site for the Exim distribution is
 .display
-.url(https://downloads.exim.org/)
+&url(https://downloads.exim.org/)
 .endd
 The service is available over HTTPS, HTTP and FTP.
 We encourage people to migrate to HTTPS.
@@ -28125,7 +28125,7 @@ The Apache web-server was for a long time the canonical guide, so their
 documentation is a good place to start; their SSL module's Introduction
 document is currently at
 .display
-.url(https://httpd.apache.org/docs/current/ssl/ssl_intro.html)
+&url(https://httpd.apache.org/docs/current/ssl/ssl_intro.html)
 .endd
 and their FAQ is at
 .display