Update messages/runtest.md

Co-authored-by: Juliet Shackell <[email protected]>

Author: sbudhirajadoc

messages/runtest.md

@@ -38,7 +38,7 @@ NOTE: The testRunCoverage value (JSON and JUnit result formats) is a percentage
 
   <%= config.bin %> <%= command.id %> --target-org myscratch
 
-- Run all tests synchronously. The command waits to display the test results until all tests finish:
+- Run all tests synchronously; the command waits to display the test results until all tests finish:
 
   <%= config.bin %> <%= command.id %> --synchronous