chore: fix remaining unescaped html tags in JsDoc (#9611)

Author: julianobrasil

src/lib/chips/chip-input.ts

@@ -22,7 +22,7 @@ export interface MatChipInputEvent {
 }
 
 /**
- * Directive that adds chip-specific behaviors to an input element inside <mat-form-field>.
+ * Directive that adds chip-specific behaviors to an input element inside `<mat-form-field>`.
  * May be placed inside or outside of an `<mat-chip-list>`.
  */
 @Directive({

src/lib/icon/icon.ts

@@ -41,7 +41,7 @@ export const _MatIconMixinBase = mixinColor(MatIconBase);
  *     `<mat-icon svgIcon="left-arrow"></mat-icon>
  *     <mat-icon svgIcon="animals:cat"></mat-icon>`
  *
- * - Use a font ligature as an icon by putting the ligature text in the content of the <mat-icon>
+ * - Use a font ligature as an icon by putting the ligature text in the content of the `<mat-icon>`
  *   component. By default the Material icons font is used as described at
  *   http://google.github.io/material-design-icons/#icon-font-for-the-web. You can specify an
  *   alternate font by setting the fontSet input to either the CSS class to apply to use the