Provide More Information in Dotted Graph about faas-flow HOT 1 CLOSED

digraph depgraph {
        rankdir=TB;
        splines=curved;
        fontname="Courier New";
        fontcolor="grey";
        node [style=filled fontname="Courier" fontcolor="black"];
        
        
        subgraph cluster_0 {
		   label = "1-validate-query";
		   
		   color=lightgrey;
		   style=rounded;
		   node [style=filled];
		   
		   "1.1-mod" [color=lightblue];
	    }
        
        subgraph cluster_1 {
          label = "2-detect-face";
		  color=lightgrey;
		  style=rounded;
		  node [style=filled];
		  
		  "2.1-func-facedetect" [color=lightgrey];
	    }
	    
	    subgraph cluster_2 {
		  label = "3-edit-image";
		  color=lightgrey;
		  style=rounded;
		  node [style=filled];
		  
		  "3.1-func-colorization" [color=lightgrey];
		  "3.2-func-image-resizer" [color=lightgrey];
		 
	    }
	    
	    subgraph cluster_4 {
	      label = "4-validate-and-upload";
		  color=lightgrey;
		  style=rounded;
		  node [style=filled];
		  
		  "4.1-mod" [color=pink];
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        "1.1-mod" -> "2.1-func-facedetect" [label="1:1" color=grey ];
        "1.1-mod" -> "3.1-func-colorization" [label="1:1" color=grey];
        
	    "3.1-func-colorization" -> "3.2-func-image-resizer" [label="1:1" color=grey];
	    
        "2.1-func-facedetect" -> "4.1-mod" [label="1:1" color=grey];
        "3.2-func-image-resizer" -> "4.1-mod" [label="1:1" color=grey];
}