fix(schematics): remove unnecessary semicolon in tree component (#13284)

add space after semicolon

Author: Splaktar

src/lib/schematics/tree/files/__path__/__name@dasherize@if-flat__/__name@dasherize__.component.html

@@ -7,7 +7,7 @@
     {{node.name}}
   </mat-tree-node>
 
-  <mat-tree-node *matTreeNodeDef="let node;when: hasChild" matTreeNodePadding>
+  <mat-tree-node *matTreeNodeDef="let node; when: hasChild" matTreeNodePadding>
     <button mat-icon-button matTreeNodeToggle
             [attr.aria-label]="'toggle ' + node.name">
       <mat-icon class="mat-icon-rtl-mirror">

src/lib/schematics/tree/files/__path__/__name@dasherize@if-flat__/__name@dasherize__.component.ts

@@ -76,7 +76,7 @@ export class <%= classify(name) %>Component {
   /** Get whether the node is expanded or not. */
   isExpandable(node: FlatTreeNode) {
     return node.expandable;
-  };
+  }
 
   /** Get whether the node has children or not. */
   hasChild(index: number, node: FlatTreeNode) {