Markdownify the notes field for Build model

InvenTree/build/migrations/0008_auto_20200201_1247.py

@@ -0,0 +1,19 @@
+# Generated by Django 2.2.9 on 2020-02-01 12:47
+
+from django.db import migrations
+import markdownx.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('build', '0007_auto_20191118_2321'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='build',
+            name='notes',
+            field=markdownx.models.MarkdownxField(blank=True, help_text='Extra build notes'),
+        ),
+    ]