Update callouts.yml removing misleading information

Fix misleading information, related to #1044

Author: soapdog

_data/new-data/landing/callouts.yml

@@ -71,7 +71,7 @@
 
 - title: Adaptable
   subtitle: From microcontrollers to servers.
-  text: "The only language that can span from embedded and kernel, to server and apps. Swift excels no matter where it’s used: from constrained environments like firmware where every byte counts, to cloud services handling billions of requests a day."
+  text: "A powerful language that can span from embedded and kernel, to server and apps. Swift excels no matter where it’s used: from constrained environments like firmware where every byte counts, to cloud services handling billions of requests a day."
   code: |-
     // Configure UART by direct register manipulation 
     // using Swift MMIO. Enables RX and TX, and sets