Update signing.adoc

Update documentation following jreleaser/jreleaser#1884

Author: JonasVautherin

docs/modules/reference/pages/signing.adoc

@@ -46,7 +46,7 @@ signing:
   mode: MEMORY
 
   # The passphrase required to read secret keys.
-  # icon:exclamation-triangle[] icon:eye-slash[]
+  # icon:dot-circle[] icon:eye-slash[]
   passphrase: __USE_ENVIRONMENT_VARIABLE__
 
   # The public GPG (ascii armored) used to sign files and commits.
@@ -161,7 +161,7 @@ TOML::
   mode = 'MEMORY'
 
   # The passphrase required to read secret keys.
-  # icon:exclamation-triangle[] icon:eye-slash[]
+  # icon:dot-circle[] icon:eye-slash[]
   passphrase = "__USE_ENVIRONMENT_VARIABLE__"
 
   # The public GPG (ascii armored) used to sign files and commits.
@@ -276,7 +276,7 @@ JSON::
     "mode": "MEMORY",
 
     // The passphrase required to read secret keys.
-    // icon:exclamation-triangle[] icon:eye-slash[]
+    // icon:dot-circle[] icon:eye-slash[]
     "passphrase": "__USE_ENVIRONMENT_VARIABLE__",
 
     // The public GPG (ascii armored) used to sign files and commits.
@@ -411,7 +411,7 @@ Maven::
     <!--
       The passphrase required to read secret keys.
       Required when mode = `MEMORY` || `FILE`.
-      icon:exclamation-triangle[] icon:eye-slash[]
+      icon:dot-circle[] icon:eye-slash[]
     -->  
     <passphrase>__USE_ENVIRONMENT_VARIABLE__</passphrase>
 
@@ -564,7 +564,7 @@ jreleaser {
     mode = 'MEMORY'
 
     // The passphrase required to read secret keys.
-    // icon:exclamation-triangle[] icon:eye-slash[]
+    // icon:dot-circle[] icon:eye-slash[]
     passphrase = '__USE_ENVIRONMENT_VARIABLE__'
 
     // The public GPG (ascii armored) used to sign files and commits.