provide different keys for icons used in testimonials.

The icons rendered in Testimonial component had same value for key being in the same level. Suffixes have been added to make the keys distinguishable.

fixes #93

Author: rkpattnaik780

src/components/Testimonial.vue

@@ -2,8 +2,8 @@
 	<b-card-group class="testimonialContainer">
 		<b-card v-for="testimonial in testimonials" class="testimonial" :key="testimonial.id">
 			<div id="hearts">
-				<i class="material-icons" v-for="n in testimonial.stars" :key="n" style="text-align: center; color: #dc3545;">favorite</i>
-				<i class="material-icons" v-for="n in 5 - testimonial.stars" :key="n" style="text-align: center; color: #dc3545;">favorite_border</i>
+				<i class="material-icons" v-for="n in testimonial.stars" :key="n + '-a'" style="text-align: center; color: #dc3545;">favorite</i>
+				<i class="material-icons" v-for="n in 5 - testimonial.stars" :key="n + '-b'" style="text-align: center; color: #dc3545;">favorite_border</i>
 			</div>
             <blockquote class="blockquote mb-0">
                 <p style="font-size: 16px">{{ testimonial.testimonial }}</p>