Clarify that the template should be used

Author: jamesmunns

CONTRIBUTING.md

@@ -14,14 +14,17 @@ Anyone can submit an item that they think is not yet awesome to the list. To do
 
 In order to help people make this thing awesome, your item should meet all of the following criteria:
 
-1. You request is clearly stated, linking to relevant documentation, such as a whitepaper, protocol definition, datasheet, etc.
+1. Your request is using the [template] provided in the README
+2. Your request is clearly stated, linking to relevant documentation, such as a whitepaper, protocol definition, datasheet, etc.
     * This lets someone know how to implement this request, and make Embedded Rust more awesome.
-2. "Success Criteria" for your request are defined, such as "Add PWM support to the iMXRT1050 HAL"
+3. "Success Criteria" for your request are defined, such as "Add PWM support to the iMXRT1050 HAL"
     * This lets the reviewer know when the work is done, so they can remove this item from the list
-3. Possible using today's Rust (not blocked by LLVM impl, rustc impl, etc.)
+4. Possible using today's Rust (not blocked by LLVM impl, rustc impl, etc.)
     * For now, we can't accept anything in this list that is not possible with today's (preferrably stable) version of Rust. This keeps items from staying on the list for too long.
-4. Your request should be broken into reasonable work packages, such as "Create HAL for XYZ chip", not "support all boards from ABC vendor"
+5. Your request should be broken into reasonable work packages, such as "Create HAL for XYZ chip", not "support all boards from ABC vendor"
     * This also keeps items from staying on the list for too long
+    
+[template]: https://github.com/rust-embedded/not-yet-awesome-embedded-rust#not-yet-awesome-item-template
 
 Once you've submitted a PR by editing the README, someone from the WG will review your suggestion to make sure that it meets the criteria above. They'll help you fix any issues with your request. Once the review checklist is complete, and any fixes are made, the item will be added to the list!