Update text format for encoding 2

After merging #10, I neglected to update the overview to reflect the updated text syntax.

Author: bvisness

proposals/compact-import-section/Overview.md

@@ -46,11 +46,9 @@ Two new forms of the `import` declaration are added, in addition to the existing
 ```
 (import "mod" "foo" ...)                            ;; existing
 (import "mod" (item "foo" ...) (item "bar" ...))    ;; compact encoding 1 (new)
-(import "mod" (type ... (item "foo") (item "bar"))) ;; compact encoding 2 (new)
+(import "mod" (item "foo") (item "bar") ...)        ;; compact encoding 2 (new)
 ```
 
-The `(item)` syntax is used for encoding 2, rather than bare strings, in order to provide room for an identifier, e.g. `(import "mod" (type ... (item $foo "foo")))`.
-
 ### Syntax, Validation, Execution
 
 No changes are made to the syntax, validation, or execution sections.