[ADF-3551] Updates for doc review (#3784)

* [ADF-3551] Updated doc comments

* [ADF-3551] Updated doc comments

* [ADF-3551] Doc files updated with new doc comments

lib/content-services/search/components/search-radio/search-radio.component.ts

@@ -37,6 +37,7 @@ export interface SearchRadioOption {
 })
 export class SearchRadioComponent implements SearchWidget, OnInit {
 
+    /** The value of the selected radio button. */
     @Input()
     value: string;
 

lib/content-services/search/components/search-slider/search-slider.component.ts

@@ -38,6 +38,7 @@ export class SearchSliderComponent implements SearchWidget, OnInit {
     max: number;
     thumbLabel = false;
 
+    /** The numeric value represented by the slider. */
     @Input()
     value: number | null;
 

lib/content-services/search/components/search-text/search-text.component.ts

@@ -29,6 +29,7 @@ import { SearchQueryBuilderService } from '../../search-query-builder.service';
 })
 export class SearchTextComponent implements SearchWidget, OnInit {
 
+    /** The content of the text box. */
     @Input()
     value = '';