Import "Fix some typos (it's vs its)" (#175)

Summary:
Original author: noahsark769

Closes https://github.com/facebook/Sonar/pull/175

Reviewed By: jknoxville

Differential Revision: D8989724

fbshipit-source-id: 8e1c09196b0c6c0d0fb0446a2a4a595d09f21652

src/utils/CertificateProvider.js

@@ -191,7 +191,7 @@ export default class CertificateProvider {
         // To find out which device requested the cert, search them
         // all for a matching csr file.
         // It's not important to keep these secret from other apps.
-        // Just need to make sure each app can find it's own one.
+        // Just need to make sure each app can find its own one.
         this.androidDeviceHasMatchingCSR(
           deviceCsrFilePath,
           device.id,