doc: Sync classref with current source

doc/classes/SceneTree.xml

@@ -165,6 +165,12 @@
 			<description>
 			</description>
 		</method>
+		<method name="is_using_font_oversampling" qualifiers="const">
+			<return type="bool">
+			</return>
+			<description>
+			</description>
+		</method>
 		<method name="notify_group">
 			<return type="void">
 			</return>
@@ -318,6 +324,14 @@
 			<description>
 			</description>
 		</method>
+		<method name="set_use_font_oversampling">
+			<return type="void">
+			</return>
+			<argument index="0" name="enable" type="bool">
+			</argument>
+			<description>
+			</description>
+		</method>
 	</methods>
 	<signals>
 		<signal name="connected_to_server">

doc/classes/Script.xml

@@ -19,6 +19,18 @@
 				Returns true if the script can be instanced.
 			</description>
 		</method>
+		<method name="get_base_script" qualifiers="const">
+			<return type="Script">
+			</return>
+			<description>
+			</description>
+		</method>
+		<method name="get_instance_base_type" qualifiers="const">
+			<return type="String">
+			</return>
+			<description>
+			</description>
+		</method>
 		<method name="get_source_code" qualifiers="const">
 			<return type="String">
 			</return>