[DOCS] Update 12 VisualScript* nodes

doc/classes/VisualScriptSwitch.xml

@@ -1,8 +1,19 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <class name="VisualScriptSwitch" inherits="VisualScriptNode" category="Core" version="3.0.alpha.custom_build">
 	<brief_description>
+		Branches program flow based on a given input's value.
 	</brief_description>
 	<description>
+		Branches the flow based on an input's value. Use "Case Count" in the Inspector to set the number of branches and each comparison's optional type.
+		[b]Input Ports:[/b]
+		- Sequence: [code]'input' is[/code]
+		- Data (variant): [code]=[/code]
+		- Data (variant): [code]=[/code] (optional)
+		- Data (variant): [code]input[/code]
+		[b]Output Ports:[/b]
+		- Sequence
+		- Sequence (optional)
+		- Sequence: [code]done[/code]
 	</description>
 	<tutorials>
 	</tutorials>