Refactor: Update ShellContext.java

Author: SauravBhowmick

src/main/java/com/mycmd/ShellContext.java

@@ -17,13 +17,14 @@ public class ShellContext {
 
   public ShellContext() {
     this.currentDir = new File(System.getProperty("user.dir"));
-    this.environment = new HashMap<>()(System.getenv());
+    this.environment = new HashMap<>(System.getenv());
     this.history = new ArrayList<>();
     this.aliases = new HashMap<>();
     this.scanner = null;
     this.startTime = System.currentTimeMillis();
   }
 
+
   // ==================== Scanner Management ====================
 
   /**