Update README

Author: Charoite Lee

README.md

@@ -10,7 +10,7 @@
 
 ## How this layer is built?
 
-The Lambda Layer is built from source of node-canvas NPM package on EC2 instance, with following native dependencies installed. Check ``` build-layer.sh ``` for details.
+The Lambda Layer is built from source of node-canvas npm package on EC2 instance, with following native dependencies installed. Please check ``` build-layer.sh ``` for details.
 
 ```bash
 gcc-c++ cairo-devel pango-devel libjpeg-turbo-devel giflib-devel librsvg2-devel pango-devel bzip2-devel