Updated help_text for Organization.logo field

The help text now reflects the fact that this field is used for the certificate image.

ECOM-6862

organizations/migrations/0002_auto_20170117_1434.py

@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('organizations', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='organization',
+            name='logo',
+            field=models.ImageField(help_text='Please add only .PNG files for logo images. This logo will be used on certificates.', max_length=255, null=True, upload_to=b'organization_logos', blank=True),
+        ),
+    ]

organizations/models.py

@@ -11,7 +11,7 @@
 
 class Organization(TimeStampedModel):
     """
-    An Organizatio is a representation of an entity which publishes/provides
+    An Organization is a representation of an entity which publishes/provides
     one or more courses delivered by the LMS. Organizations have a base set of
     metadata describing the organization, including id, name, and description.
     """
@@ -20,7 +20,7 @@ class Organization(TimeStampedModel):
     description = models.TextField()
     logo = models.ImageField(
         upload_to='organization_logos',
-        help_text=_(u'Please add only .PNG files for logo images.'),
+        help_text=_('Please add only .PNG files for logo images. This logo will be used on certificates.'),
         null=True, blank=True, max_length=255
     )
     active = models.BooleanField(default=True)