clarified meaning of "optional"

11 Local Community.md

@@ -24,7 +24,7 @@ Trying to access the homepage should redirect to the login page if the user is n
 1. A short issue name.
 2. A description of the location.
 3. A detailed, multi-line description that support the use of _markdown_ formatting.
-4. An optional photo uploaded from their computer.
+4. The user may choose to upload a photo and a placeholder image is used if no photo is uploaded.
 
 In addition to the information added by the user, the following should be captured automatically and stored in the database: