docs: fix github templates

.github/ISSUE_TEMPLATE/BUG.md

@@ -19,7 +19,7 @@ about: Something went awry and you'd like to tell us about it.
 * Node Version:
 * NPM Version:
 * webpack Version:
-* ${package} Version:
+* uglifyjs-webpack-plugin Version:
 
 ### Expected Behavior
 

.github/ISSUE_TEMPLATE/FEATURE.md

@@ -19,7 +19,7 @@ about: Suggest an idea for this project
 * Node Version:
 * NPM Version:
 * webpack Version:
-* ${package} Version:
+* uglifyjs-webpack-plugin Version:
 
 ### Feature Proposal
 

.github/ISSUE_TEMPLATE/MODIFICATION.md

@@ -19,7 +19,7 @@ about: Would you like something work differently? Have an alternative approach?
 * Node Version:
 * NPM Version:
 * webpack Version:
-* ${package} Version:
+* uglifyjs-webpack-plugin Version:
 
 
 ### Expected Behavior / Situation