Fix some small text mistakes

doc/classes/EditorScript.xml

@@ -5,7 +5,7 @@
 	</brief_description>
 	<description>
 		Scripts extending this class and implementing its [method _run] method can be executed from the Script Editor's [b]File &gt; Run[/b] menu option (or by pressing [code]Ctrl+Shift+X[/code]) while the editor is running. This is useful for adding custom in-editor functionality to Godot. For more complex additions, consider using [EditorPlugin]s instead.
-		[b]Note:[/b] Extending scripts need to have [code]tool mode[/code] enabled.
+		[b]Note:[/b] Extending scripts need to have [code]tool[/code] mode enabled.
 		[b]Example script:[/b]
 		[codeblock]
 		tool

doc/classes/Image.xml

@@ -415,7 +415,7 @@
 			<argument index="1" name="grayscale" type="bool" default="false">
 			</argument>
 			<description>
-				Saves the image as an EXR file to [code]path[/code]. If grayscale is [code]true[/code] and the image has only one channel, it will be saved explicitly as monochrome rather than one red channel. This function will return [constant ERR_UNAVAILABLE] if Godot was compiled without the TinyEXR module.
+				Saves the image as an EXR file to [code]path[/code]. If [code]grayscale[/code] is [code]true[/code] and the image has only one channel, it will be saved explicitly as monochrome rather than one red channel. This function will return [constant ERR_UNAVAILABLE] if Godot was compiled without the TinyEXR module.
 			</description>
 		</method>
 		<method name="save_png" qualifiers="const">

doc/classes/VScrollBar.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <class name="VScrollBar" inherits="ScrollBar" category="Core" version="3.2">
 	<brief_description>
-		Vertical version of [ScrollBar], which goes from left (min) to right (max).
+		Vertical version of [ScrollBar], which goes from top (min) to bottom (max).
 	</brief_description>
 	<description>
 	</description>