fix: update cert-manager issuer names in ingress and issuer YAML files

ingress.yaml

@@ -3,7 +3,7 @@ kind: Ingress
 metadata:
   name: nginix-ingress
   annotations:
-    cert-manager.io/issuer: letsencrypt-issuer
+    cert-manager.io/issuer: letsencrypt
 spec:
   tls:
     - hosts:

issuer.yaml

@@ -1,14 +1,14 @@
 apiVersion: cert-manager.io/v1
 kind: Issuer
 metadata:
-  name: letsencrypt-issuer
+  name: letsencrypt
   namespace: default
 spec:
   acme:
     server: https://acme-v02.api.letsencrypt.org/directory
     email: suyiiyii@gmail.com
     privateKeySecretRef:
-      name: letsencrypt-issuer-key
+      name: letsencrypt-key
     solvers:
       - http01:
           ingress: