Apply suggestions from code review

Author: edgarrmondragon

_data/meltano/extractors/tap-mailchimp/acarter24.yml

@@ -28,7 +28,7 @@ settings:
   sensitive: true
 - description: Your Mailchimp DC
   kind: string
-  label: Dc
+  label: Data Center
   name: dc
 - description: "'True' to enable schema flattening and automatically expand nested
     properties."

_data/meltano/extractors/tap-totango/edsoncezar16.yml

@@ -76,9 +76,9 @@ settings:
   label: API URL
   name: api_url
   options:
-  - label: Https://API Totango Com
+  - label: US Endpoint
     value: https://api.totango.com
-  - label: 'Https://API Eu1 Totango Com '
+  - label: EU Endpoint
     value: 'https://api-eu1.totango.com '
   value: https://api.totango.com
 - description: The token to authenticate against the API service