remove \ in spf record

remove \ in spf record to match our actual whitelabel wizard settings
Merge pull request #493 from beersam82/patch-2

remove \ in spf record
took out the "enabled by default"

because it's not.
Fix typo in HTML table
Merge pull request #495 from lorin/fix-typo

Fix typo in HTML table
Update index.html

Revised delist removal process
Merge pull request #496 from leormanelis/patch-2

Update index.html
Change "enabled" to "enable"

Found another instance where `enabled` was specified when it should actually be `enable`.
Merge pull request #497 from scottkawai/patch-1

Change "enabled" to "enable"
Merge pull request #498 from sendgrid/develop

deploy 🍔