Update FHAgent.java

The difference between $fh.act and $fh.cloud is the following:
The firs one uses properties like "act", and "req", while the latter works with "path", and "data".

With $fh.act 

"act": "getTweets", // Name of the Cloud function to call
"req": {
    "qs": "feedhenry" // Set of key/value pairs that are passed as paramaters to the Cloud function
  },

With $fh.cloud

"path": "cloud/getTweets", // Name of the Cloud function to call
"data": {
    "qs": "feedhenry" // Set of key/value pairs that are passed as paramaters to the Cloud function
  },