Improve variable name and test description in TypeScript example (#1747)
Improve variable name and test description in TypeScript example (#1747)

* Improve variable name in example

* Fix test description in TypeScript example

bookman25/jest,mpontus/jest,ide/jest,blainekasten/jest,aaron-goshine/jest,facebook/jest,blainekasten/jest,ide/jest,cpojer/jest,aaron-goshine/jest,ide/jest,bookman25/jest,skovhus/jest,aaron-goshine/jest,mpontus/jest,bookman25/jest,mpontus/jest,facebook/jest,cpojer/jest,blainekasten/jest,skovhus/jest,cpojer/jest,skovhus/jest,facebook/jest