Update tests/legacy-cli/e2e_runner.ts

Co-authored-by: Alan Agius <[email protected]>

Author: jbedard

tests/legacy-cli/e2e_runner.ts

@@ -33,7 +33,7 @@ Error.stackTraceLimit = Infinity;
  *                    passed in.
  *   --shard          Index of this processes' shard.
  *   --tmpdir=path    Override temporary directory to use for new projects.
- *   --yarn           Use yarn instead of npm package manager
+ *   --yarn           Use yarn as package manager.
  * If unnamed flags are passed in, the list of tests will be filtered to include only those passed.
  */
 const argv = yargsParser(process.argv.slice(2), {