Improve Camera2D.zoom description to be less ambiguous

Author: Calinou

doc/classes/Camera2D.xml

@@ -179,7 +179,7 @@
 			The angular, asymptotic speed of the camera's rotation smoothing effect when [member rotation_smoothing_enabled] is [code]true[/code].
 		</member>
 		<member name="zoom" type="Vector2" setter="set_zoom" getter="get_zoom" default="Vector2(1, 1)">
-			The camera's zoom. A zoom of [code]Vector(2, 2)[/code] doubles the size seen in the viewport. A zoom of [code]Vector(0.5, 0.5)[/code] halves the size seen in the viewport.
+			The camera's zoom. Higher values are more zoomed in. For example, a zoom of [code]Vector2(2.0, 2.0)[/code] will be twice as zoomed in on each axis (the visible area is four times as small). In contrast, a zoom of [code]Vector2(0.5, 0.5)[/code] will be twice as zoomed out on each axis (the visible area is four times as large). The X and Y components should generally always be set to the same value, unless you wish to stretch the camera view.
 			[b]Note:[/b] [member FontFile.oversampling] does [i]not[/i] take [Camera2D] zoom into account. This means that zooming in/out will cause bitmap fonts and rasterized (non-MSDF) dynamic fonts to appear blurry or pixelated unless the font is part of a [CanvasLayer] that makes it ignore camera zoom. To ensure text remains crisp regardless of zoom, you can enable MSDF font rendering by enabling [member ProjectSettings.gui/theme/default_font_multichannel_signed_distance_field] (applies to the default project font only), or enabling [b]Multichannel Signed Distance Field[/b] in the import options of a DynamicFont for custom fonts. On system fonts, [member SystemFont.multichannel_signed_distance_field] can be enabled in the inspector.
 		</member>
 	</members>