Fix typo in new / edit part forms ("extenel URL")

Capitalisation consistency in "Create New Part" form title

InvenTree/part/models.py

@@ -562,7 +562,7 @@ class Part(MPTTModel):
 
     revision = models.CharField(max_length=100, blank=True, null=True, help_text=_('Part revision or version number'))
 
-    link = InvenTreeURLField(blank=True, null=True, help_text=_('Link to extenal URL'))
+    link = InvenTreeURLField(blank=True, null=True, help_text=_('Link to external URL'))
 
     image = StdImageField(
         upload_to=rename_part_image,

InvenTree/part/views.py

@@ -510,7 +510,7 @@ class PartCreate(AjaxCreateView):
     model = Part
     form_class = part_forms.EditPartForm
 
-    ajax_form_title = _('Create new part')
+    ajax_form_title = _('Create New Part')
     ajax_template_name = 'part/create_part.html'
 
     role_required = 'part.add'