Document using `String.uri_encode()` with `OS.shell_open()`

doc/classes/OS.xml

@@ -634,6 +634,7 @@
 				- [code]OS.shell_open("https://godotengine.org")[/code] opens the default web browser on the official Godot website.
 				- [code]OS.shell_open("mailto:[email protected]")[/code] opens the default email client with the "To" field set to [code][email protected][/code]. See [url=https://datatracker.ietf.org/doc/html/rfc2368]RFC 2368 - The [code]mailto[/code] URL scheme[/url] for a list of fields that can be added.
 				Use [method ProjectSettings.globalize_path] to convert a [code]res://[/code] or [code]user://[/code] path into a system path for use with this method.
+				[b]Note:[/b] Use [method String.uri_encode] to encode characters within URLs in a URL-safe, portable way. This is especially required for line breaks. Otherwise, [method shell_open] may not work correctly in a project exported to the Web platform.
 				[b]Note:[/b] This method is implemented on Android, iOS, Web, Linux, macOS and Windows.
 			</description>
 		</method>

doc/classes/String.xml

@@ -970,7 +970,7 @@
 		<method name="uri_decode" qualifiers="const">
 			<return type="String" />
 			<description>
-				Decodes the string from its URL-encoded format. This method is meant to properly decode the parameters in a URL when receiving an HTTP request.
+				Decodes the string from its URL-encoded format. This method is meant to properly decode the parameters in a URL when receiving an HTTP request. See also [method uri_encode].
 				[codeblocks]
 				[gdscript]
 				var url = "$DOCS_URL/?highlight=Godot%20Engine%3%docs"
@@ -986,7 +986,7 @@
 		<method name="uri_encode" qualifiers="const">
 			<return type="String" />
 			<description>
-				Encodes the string to URL-friendly format. This method is meant to properly encode the parameters in a URL when sending an HTTP request.
+				Encodes the string to URL-friendly format. This method is meant to properly encode the parameters in a URL when sending an HTTP request. See also [method uri_decode].
 				[codeblocks]
 				[gdscript]
 				var prefix = "$DOCS_URL/?highlight="