How to remove the a vector element from unordered_map

How can i remove a vector element from a unordered_map

std::unordered_map<std::string stdstrID, std::vector<std::string>> controlTags;

i will have multiple vales for a give keyname and would want to remove given value for the keyname from the vector list.

void Sum_TagControl::Remove_Tag(std::string stdstrControlID , std::string stdstrName) {
    
    for (auto tagData : controlTags[stdstrControlID]) {
        if (tagData == stdstrName) {
            // remove this text element from the  vector list.
        }
    
    }   
}