Update REFERENCE.md

Author: mattstratton

REFERENCE.md

@@ -61,7 +61,7 @@ All dates are in unquoted YYYY-MM-DD, like this: `variable: 2016-01-05`, or like
 | `registration_date_end`   | YYYY-MM-DD | No       | The date you will close registration. Can be a blank value.                                                                                                                                                                   | 2016-01-05                                            |
 | `registration_closed`     | String     | No       | Set this to "true" if you need to manually close registration before your registration end date.                                                                                                                              | "true"                                                |
 | `registration_link`       | String     | No       | If you have a custom registration link, enter it here. This will control the Registration menu item as well as the "Register" button.                                                                                         | "https://myurlhere"  |                                                                                   |
-| `sponsor_link`       | String     | No       | If you have a custom sponsorship link, enter it here. This will control the Sponsor menu item as well as the "Become an X Sponsor!" links.                                                                                         | "https://myurlhere"  |                                                                                   |
+| `sponsor_link`       | String     | No       | If you have a custom sponsorship link, enter it here. This will control the "Become an X Sponsor!" links.                                                                                         | "https://myurlhere"  |                                                                                   |
 
 ### Branding Fields