fix capitalization

Author: mhdawson

005-ABI-Stable-Module-API.md

@@ -94,11 +94,11 @@ There has been enough progress that instead of listing the API methods
 here we will point to the header files in the working PoC repos so it
 remains up to date:
 
-Core Methods:
+Core methods:
 * [node_jsvmapi_types.h](https://github.com/nodejs/abi-stable-node/blob/api-prototype-6.2.0/src/node_jsvmapi_types.h)
 * [node_jsvmapi.h](https://github.com/nodejs/abi-stable-node/blob/api-prototype-6.2.0/src/node_jsvmapi.h)
 
-AsyncWorker Support Methods:
+AsyncWorker support methods:
 
 * [node_asyncapi_types.h](https://github.com/nodejs/abi-stable-node/blob/api-prototype-6.2.0/src/node_asyncapi_types.h)
 * [node_asyncapi.h](https://github.com/nodejs/abi-stable-node/blob/api-prototype-6.2.0/src/node_asyncapi.h)