Un-capitalize "halberd"

lib/convert.js

@@ -229,6 +229,9 @@ function getBodyXML(chapter, contentEl) {
   // This is sometimes missing its capitalization
   xml = xml.replace(/the birdcage/g, "the Birdcage");
 
+  // There's no reason why this should be capitalized. (Note that it never appears at the beginning of any sentences.)
+  xml = xml.replace(/Halberd/g, "halberd");
+
   // Especially early in the story, PRT designations are capitalized; they should not be. This fixes the cases where we
   // can be reasonably sure they don't start a sentence, although more specific instances are done in
   // substitutions.json, and some need to be back-corrected.