Merge pull request #20699 from linbingquan/dev-cleanup

Docs: Clean up.

docs/manual/ar/introduction/How-to-update-things.html

@@ -144,8 +144,8 @@ geometry.tangentsNeedUpdate = true;
 			</p>
 
 			<code>
-	//removed after r66
-	geometry.dynamic = true;
+// removed after r66
+geometry.dynamic = true;
 			</code>
 
 		</div>

docs/manual/en/introduction/How-to-update-things.html

@@ -159,8 +159,8 @@ geometry.tangentsNeedUpdate = true;
 			</p>
 
 			<code>
-	//removed after r66
-	geometry.dynamic = true;
+// removed after r66
+geometry.dynamic = true;
 			</code>
 
 		</div>

docs/manual/zh/introduction/How-to-update-things.html

@@ -142,8 +142,8 @@ geometry.tangentsNeedUpdate = true;
 			</p>
 
 			<code>
-	//removed after r66
-	geometry.dynamic = true;
+// removed after r66
+geometry.dynamic = true;
 			</code>
 		</div>