Using Array.map in nested object structure in Java Script

I have below object structure in array

[
  {
   "modules":set of modules here 
   "details": [
     {
       "name":"abc"
       "version":"1.2.3"
     },
     {
       "name":"def"
       "version":"2.3.4"
     },
     {
       "name":"ghi"
       "version":"4.5.6"
     }
   ]
  },
  {
   "modules":set of modules here 
   "details": [
     {
       "name":"jkl"
       "version":"7.8.9"
     },
     {
       "name":"mno"
       "version":"10.11.12"
     },
     {
       "name":"pqr"
       "version":"13.14.15"
     }
   ]  
  }
]

What I want to do is :
get details array transformed into below format for each root object in master array as

"details": [
     {
       module:"jkl:7.8.9"
     },
     {
       module:"mno:10.11.12"
     },
     {
       module:"pqr:13.14.15"
     }
   ]  

So final array would be :

[
  {
   "modules":set of modules here 
   "details": [
     {
       "module":"abc:1.2.3"
     },
     {
       "module":"def:2.3.4"
     },
     {
       "module":"ghi:4.5.6"
     }
   ]
  },
  {
   "modules":set of modules here 
   "details": [
     {
       "module":"jkl:7.8.9"
     },
     {
       "module":"mno:10.11.12"
     },
     {
       "module":"pqr:13.14.15"
     }
   ]  
  }
]

What I have tried and is working is :

rootArray.forEach((entry)=> {
    let line = entry.details.map((detailEntry)=>{
    //merge detailEntry into single line 
    })
    entry.details = line 
});

My question is : is this a right approach or is there any better solution available ?

>Solution :

const data = [
  {
   "modules": "set of modules here",
   "details": [
     {
       "name":"abc",
       "version":"1.2.3"
     },
     {
       "name":"def",
       "version":"2.3.4"
     },
     {
       "name":"ghi",
       "version":"4.5.6"
     }
   ]
  },
  {
   "modules": "set of modules here",
   "details": [
     {
       "name":"jkl",
       "version":"7.8.9"
     },
     {
       "name":"mno",
       "version":"10.11.12"
     },
     {
       "name":"pqr",
       "version":"13.14.15"
     }
   ]  
  }
]

const result = data.map( item => ({modules: item.modules, details: item.details.map(i => {
  return { module: `${i["name"]}:${i["version"]}` }
})}))

console.log(result)