According to native speaker, correct name is Punjabi

weblate/lang/i18n.py

@@ -118,7 +118,6 @@ def fake():
     _("Norwegian Nynorsk")
     _("Occitan")
     _("Oriya")
-    _("Panjabi")
     _("Papiamento")
     _("Pedi")
     _("Persian")
@@ -127,6 +126,7 @@ def fake():
     _("Portuguese")
     _("Portuguese (Brazil)")
     _("Portuguese (Portugal)")
+    _("Punjabi")
     _("Pushto")
     _("Romanian")
     _("Romansh")

weblate/lang/models.py

@@ -254,6 +254,8 @@ class LanguageManager(models.Manager):
                 lang.name = 'Occitan'
             elif code == 'nb':
                 lang.name = 'Norwegian Bokmål'
+            elif code == 'pa':
+                lang.name = 'Punjabi'
             else:
                 # Standard ttkit language name
                 lang.name = props[0].split(';')[0]