doc: Fix a couple broken links to a moved page

doc/classes/Engine.xml

@@ -146,7 +146,7 @@
 			else:
 			    simulate_physics()
 			[/codeblock]
-			See [url=$DOCS_URL/tutorials/misc/running_code_in_the_editor.html]Running code in the editor[/url] in the documentation for more information.
+			See [url=$DOCS_URL/tutorials/plugins/running_code_in_the_editor.html]Running code in the editor[/url] in the documentation for more information.
 			[b]Note:[/b] To detect whether the script is run from an editor [i]build[/i] (e.g. when pressing [code]F5[/code]), use [method OS.has_feature] with the [code]"editor"[/code] argument instead. [code]OS.has_feature("editor")[/code] will evaluate to [code]true[/code] both when the code is running in the editor and when running the project from the editor, but it will evaluate to [code]false[/code] when the code is run from an exported project.
 		</member>
 		<member name="iterations_per_second" type="int" setter="set_iterations_per_second" getter="get_iterations_per_second" default="60">

doc/classes/Node.xml

@@ -118,7 +118,7 @@
 				    child_node.get_parent().remove_child(child_node)
 				add_child(child_node)
 				[/codeblock]
-				[b]Note:[/b] If you want a child to be persisted to a [PackedScene], you must set [member owner] in addition to calling [method add_child]. This is typically relevant for [url=$DOCS_URL/tutorials/misc/running_code_in_the_editor.html]tool scripts[/url] and [url=$DOCS_URL/tutorials/plugins/editor/index.html]editor plugins[/url]. If [method add_child] is called without setting [member owner], the newly added [Node] will not be visible in the scene tree, though it will be visible in the 2D/3D view.
+				[b]Note:[/b] If you want a child to be persisted to a [PackedScene], you must set [member owner] in addition to calling [method add_child]. This is typically relevant for [url=$DOCS_URL/tutorials/plugins/running_code_in_the_editor.html]tool scripts[/url] and [url=$DOCS_URL/tutorials/plugins/editor/index.html]editor plugins[/url]. If [method add_child] is called without setting [member owner], the newly added [Node] will not be visible in the scene tree, though it will be visible in the 2D/3D view.
 			</description>
 		</method>
 		<method name="add_child_below_node">
@@ -750,7 +750,7 @@
 		</member>
 		<member name="owner" type="Node" setter="set_owner" getter="get_owner">
 			The node owner. A node can have any other node as owner (as long as it is a valid parent, grandparent, etc. ascending in the tree). When saving a node (using [PackedScene]), all the nodes it owns will be saved with it. This allows for the creation of complex [SceneTree]s, with instancing and subinstancing.
-			[b]Note:[/b] If you want a child to be persisted to a [PackedScene], you must set [member owner] in addition to calling [method add_child]. This is typically relevant for [url=$DOCS_URL/tutorials/misc/running_code_in_the_editor.html]tool scripts[/url] and [url=$DOCS_URL/tutorials/plugins/editor/index.html]editor plugins[/url]. If [method add_child] is called without setting [member owner], the newly added [Node] will not be visible in the scene tree, though it will be visible in the 2D/3D view.
+			[b]Note:[/b] If you want a child to be persisted to a [PackedScene], you must set [member owner] in addition to calling [method add_child]. This is typically relevant for [url=$DOCS_URL/tutorials/plugins/running_code_in_the_editor.html]tool scripts[/url] and [url=$DOCS_URL/tutorials/plugins/editor/index.html]editor plugins[/url]. If [method add_child] is called without setting [member owner], the newly added [Node] will not be visible in the scene tree, though it will be visible in the 2D/3D view.
 		</member>
 		<member name="pause_mode" type="int" setter="set_pause_mode" getter="get_pause_mode" enum="Node.PauseMode" default="0">
 			Pause mode. How the node will behave if the [SceneTree] is paused.