Resolve custom-event-name-casing lint warnings

Signed-off-by: Sukanya Pandey <sukapan1@in.ibm.com>
Change-Id: I9eea4eac3b8cacc216fc9ad1011e51622622e75f
diff --git a/src/components/Mixins/LoadingBarMixin.js b/src/components/Mixins/LoadingBarMixin.js
index 9b6b195..bb3e796 100644
--- a/src/components/Mixins/LoadingBarMixin.js
+++ b/src/components/Mixins/LoadingBarMixin.js
@@ -6,15 +6,15 @@
   },
   methods: {
     startLoader() {
-      this.$root.$emit('loader::start');
+      this.$root.$emit('loader-start');
       this.loading = true;
     },
     endLoader() {
-      this.$root.$emit('loader::end');
+      this.$root.$emit('loader-end');
       this.loading = false;
     },
     hideLoader() {
-      this.$root.$emit('loader::hide');
+      this.$root.$emit('loader-hide');
     },
   },
 };