fix: fix incorrect namespace characters

I'm not sure why the issue only manifested now but there was inconsistent naming of namespaces.
Files should use underscores and namespaces should use hyphens

.snyk

@@ -1,11 +1,4 @@
 # Snyk (https://snyk.io) policy file, patches or ignores known vulnerabilities.
-version: v1.14.0
+version: v1.14.1
 ignore: {}
-# patches apply the minimum changes required to fix a vulnerability
-patch:
-  SNYK-JS-HTTPSPROXYAGENT-469131:
-    - diff-dom > updates > make-fetch-happen > https-proxy-agent:
-        patched: '2019-10-03T21:45:45.262Z'
-  SNYK-JS-TREEKILL-536781:
-    - snyk > snyk-sbt-plugin > tree-kill:
-        patched: '2019-12-11T21:43:10.020Z'
+patch: {}

src/main/mule_preview/client/transformers/apply_patch.cljs

@@ -1,4 +1,4 @@
-(ns mule-preview.client.transformers.apply_patch
+(ns mule-preview.client.transformers.apply-patch
   "Functions that take the output of diffDOM and transform a MAST data structure to reflect the changes in the diff."
   (:require
    [clojure.walk :refer [prewalk]]

src/main/mule_preview/client/views/diff.cljs

@@ -3,7 +3,7 @@
   (:require
    [mule-preview.client.react :refer [mast->react]]
    [mule-preview.client.mast :refer [xml->mast]]
-   [mule-preview.client.transformers.apply_patch :refer [augment-mast-with-diff]]
+   [mule-preview.client.transformers.apply-patch :refer [augment-mast-with-diff]]
    [mule-preview.client.diff-algorithms.diff-dom :refer [diff]]
    [mule-preview.client.views.common :refer [fetch-mappings]]
    [reagent.core :as r]