Update description for product update link in forms

Update the description for the product update link input in
both the product submission and product update forms.

Co-authored-by: dav3r <david.redmin@trio.dhs.gov>
Co-authored-by: Shane Frasier <jeremy.frasier@trio.dhs.gov>

.github/ISSUE_TEMPLATE/product-submission-form.yml

@@ -65,7 +65,7 @@ body:
     id: product-update-link
     attributes:
       label: Product update link
-      description: If an update is available where can it be found?
+      description: Where can the update be found, if one is available?
   - type: input
     id: product-last-updated
     attributes:

.github/ISSUE_TEMPLATE/product-update-form.yml

@@ -63,7 +63,7 @@ body:
     id: product-update-link
     attributes:
       label: Product update link
-      description: If an update is available where can it be found?
+      description: Where can the update be found, if one is available?
   - type: input
     id: product-last-updated
     attributes: