Add info icon on audit linking to audit faq

frontend/src/app/components/block/block.component.html

@@ -221,7 +221,7 @@
         </div>
       </div>
       <div class="col-sm" *ngIf="!isMobile">
-        <h3 class="block-subtitle" *ngIf="!isMobile" i18n="block.actual-block">Actual Block</h3>
+        <h3 class="block-subtitle" *ngIf="!isMobile" i18n="block.actual-block">Actual Block <a class="info-link" [routerLink]="['/docs/faq' | relativeUrl ]" fragment="how-do-block-audits-work"><fa-icon [icon]="['fas', 'info-circle']" [fixedWidth]="true"></fa-icon></a></h3>
         <div class="block-graph-wrapper">
           <app-block-overview-graph #blockGraphActual [isLoading]="isLoadingOverview" [resolution]="75"
             [blockLimit]="stateService.blockVSize" [orientation]="'top'" [flip]="false" [mirrorTxid]="hoverTx" mode="mined"  [auditHighlighting]="showAudit"

frontend/src/app/components/block/block.component.scss

@@ -41,6 +41,11 @@
   }
 }
 
+.block-subtitle fa-icon {
+  color: rgba(255, 255, 255, 0.4);
+  margin-left: 5px;
+}
+
 h1 {
   margin: 0px;
   padding: 0px;