Matched the bullet list items at the top, removed some of the "re-" words where the non-hyphenated variant was common enough, and changed "function" to "functions" where appropriate.

Previously UMD globals Ids were incorrect example

`@ngrx/store` should be `ngrx.store`

Before
```js
(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('tslib'), require('@angular/core'), require('rxjs'), require('@ngrx/store')) :
    typeof define === 'function' && define.amd ? define('@ngrx/store/testing', ['exports', 'tslib', '@angular/core', 'rxjs', '@ngrx/store'], factory) :
    (global = global || self, factory((global.ngrx = global.ngrx || {}, global.ngrx.store = global.ngrx.store || {}, global.ngrx.store.testing = {}), global.tslib, global.ng.core, global.rxjs, global['@ngrx/store']));
```

After
```js
(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('tslib'), require('@angular/core'), require('rxjs'), require('@ngrx/store'), require('@angular/core/testing')) :
    typeof define === 'function' && define.amd ? define('@ngrx/store/testing', ['exports', 'tslib', '@angular/core', 'rxjs', '@ngrx/store', '@angular/core/testing'], factory) :
    (global = global || self, factory((global.ngrx = global.ngrx || {}, global.ngrx.store = global.ngrx.store || {}, global.ngrx.store.testing = {}), global.tslib, global.ng.core, global.rxjs, global.ngrx.store, global.ng.core.testing));
```

#2286)

closes issue #2288

Also
- fix similar documentation error for optimistic/pessimistic
- add/correct code comments in EntityCommands and EntityCollectionServiceBase
- extends EntityCollectionService methods to accept optional EntityActionOptions and pass through to dispatch methods (omission was oversight)

Closes #2206