Merge pull request #92707 from GrahameGW/vector_normalized_docs

Clarify the results of `VectorN.normalized()` in the docs

doc/classes/Vector2.xml

@@ -324,7 +324,7 @@
 		<method name="normalized" qualifiers="const">
 			<return type="Vector2" />
 			<description>
-				Returns the result of scaling the vector to unit length. Equivalent to [code]v / v.length()[/code]. See also [method is_normalized].
+				Returns the result of scaling the vector to unit length. Equivalent to [code]v / v.length()[/code]. Returns [code](0, 0)[/code] if [code]v.length() == 0[/code]. See also [method is_normalized].
 				[b]Note:[/b] This function may return incorrect values if the input vector length is near zero.
 			</description>
 		</method>

doc/classes/Vector3.xml

@@ -293,7 +293,7 @@
 		<method name="normalized" qualifiers="const">
 			<return type="Vector3" />
 			<description>
-				Returns the result of scaling the vector to unit length. Equivalent to [code]v / v.length()[/code]. See also [method is_normalized].
+				Returns the result of scaling the vector to unit length. Equivalent to [code]v / v.length()[/code]. Returns [code](0, 0, 0)[/code] if [code]v.length() == 0[/code]. See also [method is_normalized].
 				[b]Note:[/b] This function may return incorrect values if the input vector length is near zero.
 			</description>
 		</method>

doc/classes/Vector4.xml

@@ -227,7 +227,7 @@
 		<method name="normalized" qualifiers="const">
 			<return type="Vector4" />
 			<description>
-				Returns the result of scaling the vector to unit length. Equivalent to [code]v / v.length()[/code]. See also [method is_normalized].
+				Returns the result of scaling the vector to unit length. Equivalent to [code]v / v.length()[/code]. Returns [code](0, 0, 0, 0)[/code] if [code]v.length() == 0[/code]. See also [method is_normalized].
 				[b]Note:[/b] This function may return incorrect values if the input vector length is near zero.
 			</description>
 		</method>