docs(struct-directives): update Dart cache (#2806)

Only minor prose edits in this PR. No net change in the generated HTML
for the TS side.

public/_includes/_util-fns.jade

@@ -43,6 +43,7 @@
 - var _appModuleTsVsAppCompTs = 'app/app.module.ts'
 - var _appModuleTsVsMainTs = 'app/app.module.ts'
 - var _bootstrapModule = 'bootstrapModule'
+- var _declsVsDirectives = 'declarations'
 - var _moduleVsComp = 'module'
 - var _moduleVsRootComp = 'module'
 - var _platformBrowserDynamicVsBootStrap = 'platformBrowserDynamic'

public/docs/dart/latest/_util-fns.jade

@@ -25,6 +25,7 @@ include ../../../_includes/_util-fns
 - var _appModuleTsVsAppCompTs = 'app/app_component.dart'
 - var _appModuleTsVsMainTs = 'web/main.dart'
 - var _bootstrapModule = 'bootstrap'
+- var _declsVsDirectives = 'directives'
 - var _moduleVsComp = 'component'
 - var _moduleVsRootComp = 'root component'
 - var _platformBrowserDynamicVsBootStrap = 'bootstrap'

public/docs/dart/latest/tutorial/toh-pt5.jade

@@ -3,7 +3,6 @@ extends ../../../ts/_cache/tutorial/toh-pt5
 block includes
   include ../_util-fns
   - var _appRoutingTsVsAppComp = 'AppComponent'
-  - var _declsVsDirectives = 'directives'
   - var _RoutesVsAtRouteConfig = '@RouteConfig'
   - var _RouterModuleVsRouterDirectives = 'ROUTER_DIRECTIVES'
   - var _redirectTo = 'useAsDefault'

public/docs/ts/_cache/guide/structural-directives.jade

@@ -284,7 +284,7 @@ block unless-intro
 +makeExample('structural-directives/ts/app/unless.directive.ts', null, 'unless.directive.ts')
 
 :marked
-  Now we add it to the `directives`array of the host component and try it.
+  Now we add it to the `!{_declsVsDirectives}` !{_array} of the !{_AppModuleVsAppComp} and try it.
   First we add some test HTML to the template:
 
 +makeExample('structural-directives/ts/app/structural-directives.component.html', 'myUnless')(format=".")

public/docs/ts/latest/guide/structural-directives.jade

@@ -284,7 +284,7 @@ block unless-intro
 +makeExample('structural-directives/ts/app/unless.directive.ts', null, 'unless.directive.ts')
 
 :marked
-  Now we add it to the `declarations` array of the AppModule and try it.
+  Now we add it to the `!{_declsVsDirectives}` !{_array} of the !{_AppModuleVsAppComp} and try it.
   First we add some test HTML to the template:
 
 +makeExample('structural-directives/ts/app/structural-directives.component.html', 'myUnless')(format=".")

public/docs/ts/latest/tutorial/toh-pt5.jade

@@ -3,7 +3,6 @@
 block includes
   include ../_util-fns
   - var _appRoutingTsVsAppComp = 'app.module.ts'
-  - var _declsVsDirectives = 'declarations'
   - var _RoutesVsAtRouteConfig = 'Routes'
   - var _RouterModuleVsRouterDirectives = 'RouterModule'
   - var _redirectTo = 'redirectTo'