reword reference about inert attributes

Author: jdonszelmann

src/attributes.md

@@ -192,11 +192,10 @@ r[attributes.activity]
 
 r[attributes.activity.intro]
 An attribute is either active or inert. During attribute processing, *active
-attributes* remove themselves from the thing they are on while *inert attributes*
+attributes* remove themselves from the thing they are on while *nert attributes*
 stay on.
 
-The [`cfg`] and [`cfg_attr`] attributes are active. The [`test`] attribute is
-inert when compiling for tests and active otherwise. [Attribute macros] are
+The [`cfg`] and [`cfg_attr`] attributes are active. [Attribute macros] are
 active. All other attributes are inert.
 
 r[attributes.tool]