fix(ci): fix name of discord notify method

Also use absolute path to load Groovy script.

Signed-off-by: Jakub Sokołowski <jakub@status.im>

ci/Jenkinsfile.release

@@ -93,8 +93,8 @@ pipeline {
 
   post {
     success { script {
-      def discord = load 'ci/discord.groovy'
-      discord.notify(
+      def discord = load "${WORKSPACE}/ci/discord.groovy"
+      discord.send(
         header: 'Nim-Waku deployment successful!',
         cred: 'discord-waku-deployments-webhook',
       )

ci/discord.groovy

@@ -1,4 +1,4 @@
-def discordNotify(Map args=[:]) {
+def void send(Map args=[:]) {
   def opts = [
     header: args.header ?: 'Deployment successful!',
     cred: args.cred ?: null,