Examples: Fix links missing target="_blank" in webgl_loader_3dtiles example

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

examples/webgl_loader_3dtiles.html

@@ -36,12 +36,12 @@
 			<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> 3d tiles - <a href="https://github.com/NASA-AMMOS/3DTilesRendererJS" target="_blank" rel="noopener">3d-tiles-renderer</a><br/>
 			See <a href="https://github.com/NASA-AMMOS/3DTilesRendererJS" target="_blank" rel="noopener">main project repository</a> for more information and examples on loading 3d tiles
 			<br/>
-			and other tiled data formats. <a href="https://developers.google.com/maps/documentation/tile/3d-tiles">Google Photorealistic Tiles</a> token courtesy of <a href="https://ion.cesium.com/">Cesium Ion</a>.
+			and other tiled data formats. <a href="https://developers.google.com/maps/documentation/tile/3d-tiles" target="_blank" rel="noopener">Google Photorealistic Tiles</a> token courtesy of <a href="https://ion.cesium.com/" target="_blank" rel="noopener">Cesium Ion</a>.
 		</div>
 
 		<div id="credits">
 			<img src="./textures/google_on_non_white_hdpi.png" />
-			<a href="https://ion.cesium.com/"><img src="./textures/cesiumion.png" /></a>
+			<a href="https://ion.cesium.com/" target="_blank" rel="noopener"><img src="./textures/cesiumion.png" /></a>
 		</div>
 
 		<script type="importmap">