update to use hint and placeholder for Skills field

Author: mikej

app/views/members/_new.html.haml

@@ -19,6 +19,6 @@
         wrapper_html: { class: class_names('mt-n3', 'd-none': !@member.other_dietary_restrictions?) }, label_html: { class: 'sr-only' }
     - if @member.coach?
       .col-12
-        = f.input :skill_list, label: 'Skills, enter as a comma separated list', input_html: { value: @member.skill_list.join(", ") }
+        = f.input :skill_list, input_html: { value: @member.skill_list.join(", ") }
     .col-12.text-right
       = f.button :button, submit_text, class: 'btn btn-primary'

config/locales/en.yml

@@ -671,6 +671,7 @@ en:
         name: 'Grace'
         surname: 'Hopper'
         pronouns: 'e.g she/her/they'
+        skill_list: 'e.g. HTML, CSS, JavaScript, React, Ruby, Python, SQL'
       job:
         company: 'e.g. codebar'
         company_website: 'e.g. https://codebar.io'
@@ -686,6 +687,7 @@ en:
     hints:
       member:
         email: 'This is needed so we can email you invitations to our events'
+        skill_list: 'Enter as a comma separated list'
       workshop_invitation:
         note: 'Pairing preferences or anything else you think we should know.'
       job:
@@ -722,6 +724,7 @@ en:
         number_of_coaches: Coach spots
         seats: Student spots
       member:
+        skill_list: Skills
         dietary_restrictions: If you have any dietary restrictions, let us know about them here
   activerecord:
     attributes: