Make clear the intent

Author: cstamas

src/main/java/org/codehaus/plexus/components/secdispatcher/internal/sources/EnvMasterSource.java

@@ -42,12 +42,12 @@ public EnvMasterSource() {
 
     @Override
     public String description() {
-        return "Environment variable";
+        return "Environment variable (variable name should be edited)";
     }
 
     @Override
     public Optional<String> configTemplate() {
-        return Optional.of(NAME + ":" + "ENV_VARIABLE");
+        return Optional.of(NAME + ":$VARIABLE_NAME");
     }
 
     @Override

src/main/java/org/codehaus/plexus/components/secdispatcher/internal/sources/GpgAgentMasterSource.java

@@ -53,12 +53,12 @@ public GpgAgentMasterSource() {
 
     @Override
     public String description() {
-        return "GPG Agent";
+        return "GPG Agent (agent socket path should be edited)";
     }
 
     @Override
     public Optional<String> configTemplate() {
-        return Optional.of(NAME + ":" + "$agentSocketPath");
+        return Optional.of(NAME + ":$agentSocketPath");
     }
 
     @Override

src/main/java/org/codehaus/plexus/components/secdispatcher/internal/sources/PinEntryMasterSource.java

@@ -44,12 +44,12 @@ public PinEntryMasterSource() {
 
     @Override
     public String description() {
-        return "Secure PinEntry prompt";
+        return "Secure PinEntry prompt (pinentry path should be edited)";
     }
 
     @Override
     public Optional<String> configTemplate() {
-        return Optional.of(NAME + ":" + "$pinentryPath");
+        return Optional.of(NAME + ":$pinentryPath");
     }
 
     @Override

src/main/java/org/codehaus/plexus/components/secdispatcher/internal/sources/SystemPropertyMasterSource.java

@@ -42,12 +42,12 @@ public SystemPropertyMasterSource() {
 
     @Override
     public String description() {
-        return "Java System properties";
+        return "Java System properties (property name should be edited)";
     }
 
     @Override
     public Optional<String> configTemplate() {
-        return Optional.of(NAME + ":" + "$systemProperty");
+        return Optional.of(NAME + ":$systemProperty");
     }
 
     @Override