#12536 - adding '$' to the unwanted_citation_key_characters as a default.

Author: jnchin314

src/main/java/org/jabref/logic/preferences/JabRefCliPreferences.java

@@ -577,7 +577,7 @@ protected JabRefCliPreferences() {
         defaults.put(CONFIRM_LINKED_FILE_DELETE, Boolean.TRUE);
         defaults.put(KEEP_DOWNLOAD_URL, Boolean.TRUE);
         defaults.put(DEFAULT_CITATION_KEY_PATTERN, "[auth][year]");
-        defaults.put(UNWANTED_CITATION_KEY_CHARACTERS, "-`ʹ:!;?^");
+        defaults.put(UNWANTED_CITATION_KEY_CHARACTERS, "-`ʹ:!;?^$");
         defaults.put(RESOLVE_STRINGS_FOR_FIELDS, "author;booktitle;editor;editora;editorb;editorc;institution;issuetitle;journal;journalsubtitle;journaltitle;mainsubtitle;month;publisher;shortauthor;shorteditor;subtitle;titleaddon");
         defaults.put(DO_NOT_RESOLVE_STRINGS, Boolean.FALSE);
         defaults.put(NON_WRAPPABLE_FIELDS, "pdf;ps;url;doi;file;isbn;issn");