Change the delimiter to an underscore when adding extra data (date or number)

README.md

@@ -9,7 +9,7 @@ An implementation of [docker-names](https://github.com/moby/moby/blob/master/pkg
    - animal breeding
    - rumen science
    - among others...
-2. Changed the delimiter back to an underscore
+2. Changed the delimiter to an underscore when adding extra data (date or number)
 3. Added an identifier that starts with a date (useful where identifiers have to be sorted chronologically).
 
 ## Usage

src/index.ts

@@ -964,7 +964,7 @@ export const right = [
 export function generateName(): string {
   const leftElement = left[Math.floor(Math.random() * left.length)];
   const rightElement = right[Math.floor(Math.random() * right.length)];
-  return `${leftElement}_${rightElement}`
+  return `${leftElement}-${rightElement}`
 }
 
 /**