Mention the Gospel parallels on the Texts and Translations page

Add a "Gospel parallels" section noting the synopsis behind the Synoptic
parallels panel: Byzantique's own compilation over the public-domain Robertson
(1922) and Broadus (1893) harmonies, released under CC BY-SA 4.0 like the
commentary.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: biblenerd

src/pages/about/texts-and-translations.astro

@@ -191,6 +191,16 @@ const sections: { heading: string; rows: Row[] }[] = [
     <a href="/license/" rel="license">CC&nbsp;BY-SA&nbsp;4.0</a>.
   </p>
 
+  <h2>Gospel parallels</h2>
+  <p>
+    The <strong>Synoptic parallels</strong> panel on Gospel chapter pages is drawn from Byzantique's
+    own synopsis, a harmony mapping the parallel passages of Matthew, Mark, Luke, and John. Its
+    arrangement and section titles follow the public domain harmonies of A.&nbsp;T. Robertson (1922)
+    and J.&nbsp;A. Broadus (1893), and the parallels themselves are textual facts. It is released
+    under the same&nbsp;<a href="/license/" rel="license">CC&nbsp;BY-SA&nbsp;4.0</a>&nbsp;license as
+    the commentary.
+  </p>
+
   <h2>Use of copyrighted material</h2>
   <p>
     I may use copyrighted material which has not always been specifically authorized by the copyright owner. I am making such material available for criticism, comment, news reporting, teaching, scholarship, or research. I believe this constitutes a "fair use" of any such copyrighted material as provided for in section 107 of the United States Copyright law.