Standardize capitalization of JavaScript (#9080)

* Standardize capitalization of JavaScript

* Reword links to alternate JS guides

docs/frontend/plain-js.md

@@ -1,23 +1,23 @@
 ---
-title: Javascript and Initializers
+title: JavaScript and Initializers
 ---
 
-# Javascript and Initializers
+# JavaScript and Initializers
 
-DEV has two Javascript codebases.
+DEV has two JavaScript codebases.
 
 One is located in the directory `app/assets/javascripts` and contains plain
-Javascript (mostly ES5+) being served using
+JavaScript (mostly ES5+) being served using
 [Sprockets](https://github.com/rails/sprockets-rails) which packages static
 assets.
 
-Webpacker manages the other one, and you can read more about [in its own
-guide](/frontend/webpacker).
+Webpacker manages the other one,
+[which you can read more about in this guide](/frontend/webpacker).
 
 This source code is not transpiled, only packaged and minified, and will be
-limited to whatever flavour of Javascript can run on the user's web browser.
+limited to whatever flavor of JavaScript can run on the user's web browser.
 
-`app/assets/javascripts/application.js` contains the manifest Javascript file
+`app/assets/javascripts/application.js` contains the manifest JavaScript file
 which is included globally in the primary template,
 `app/views/layouts/application.html.erb`.
 

docs/frontend/webpacker.md

@@ -4,10 +4,10 @@ title: Webpacker
 
 # Webpacker
 
-DEV has two Javascript codebases.
+DEV has two JavaScript codebases.
 
-One contains plain Javascript, you can read about it
-[in its own guide](/frontend/plain-js).
+One contains plain JavaScript,
+[which you can read more about in this guide](/frontend/plain-js).
 
 The other one is managed by [Webpacker](https://github.com/rails/webpacker), and
 it's located inside `/app/javascripts`, written using ES6+.

docs/installation/windows.md

@@ -197,7 +197,7 @@ NOTE: Make sure to download **the OSS version**, `elasticsearch-oss`.
    > - Its first task is to install the `bundler` gem. Next, it will make
    >   `bundler` install all the gems, including `Rails`, located in `Gemfile`
    >   in the root of the repository. It also installs `foreman`.
-   > - It then installs javascript dependencies using the script in `bin/yarn`
+   > - It then installs JavaScript dependencies using the script in `bin/yarn`
    >   file. These dependencies are located in `package.json` in the root of the
    >   repository.
    > - Next, it uses various Rake files located inside the `lib` folder to setup

docs/maintainers/deploying.md

@@ -50,7 +50,7 @@ tests, we then run a series of other checks. These additional checks are split
 up between the different jobs. Here is a list of those additional checks that
 are run.
 
-- Job 0 is where we run Javascript tests, Preact tests, and coverage checks.
+- Job 0 is where we run JavaScript tests, Preact tests, and coverage checks.
 - Job 1 is where Travis builds Storybook to ensure its integrity, and where we
   check for any known vulnerabilities using `bundle-audit`.
 - Job 2 is where Travis fires up a Rails console to ensure the application loads

docs/tests/test-flags.md

@@ -53,11 +53,11 @@ There are two ways to do this:
 
 ### `js: true` Flag
 
-`js: true` indicates that we want the javascript on the page to be executed when
+`js: true` indicates that we want the JavaScript on the page to be executed when
 the page is rendered, and a headless chrome instance will be initialized to do
 so (instead of the default
 [rack_test](https://github.com/teamcapybara/capybara#racktest) driver). One side
-effect of running our javascript in our specs is that a lot of pages will hit
+effect of running our JavaScript in our specs is that a lot of pages will hit
 Elasticsearch. Since we don't clean out Elasticsearch between every single spec
 (because it is very costly) this can lead to unexpected data being loaded for a
 spec. To prevent this from happening, we can use the `:stub_elasticsearch` flag.