(docs): update outdated Jest info in template READMEs

- these have not had much attention compared to the main repo README
  - and I actually forgot they existed for a bit

- Jest isn't run in watch mode by default and doesn't run tests related
  to files changed since last commit by default either
  - I'm not sure if the latter was ever a thing but the former was only
    a thing temporarily

templates/basic/README.md

@@ -23,5 +23,4 @@ The package is optimized and bundled with Rollup into multiple formats (CommonJS
 
 ### `npm test` or `yarn test`
 
-Runs the test watcher (Jest) in an interactive mode.
-By default, runs tests related to files changed since the last commit.
+Runs Jest.

templates/react-with-storybook/README.md

@@ -54,7 +54,7 @@ Code quality is [set up for you](https://github.com/palmerhq/tsdx/pull/45/files)
 
 ### Jest
 
-Jest tests are set up to run with `npm test` or `yarn test`. This runs the test watcher (Jest) in an interactive mode. By default, runs tests related to files changed since the last commit.
+Jest tests are set up to run with `npm test` or `yarn test`.
 
 #### Setup Files
 

templates/react/README.md

@@ -38,7 +38,7 @@ Code quality is [set up for you](https://github.com/palmerhq/tsdx/pull/45/files)
 
 ### Jest
 
-Jest tests are set up to run with `npm test` or `yarn test`. This runs the test watcher (Jest) in an interactive mode. By default, runs tests related to files changed since the last commit.
+Jest tests are set up to run with `npm test` or `yarn test`.
 
 #### Setup Files