Update some mistakes in doc.

Update doc in the protos pkg, to match with the latest code.

Change-Id: Ic0aeabd07b5cad38fe897ff8f70687863c7471a7
Signed-off-by: Baohua Yang <baohyang@cn.ibm.com>

protos/chaincodeevent.proto

@@ -16,7 +16,7 @@ limitations under the License.
 syntax = "proto3";
 package protos;
 
-//Chaincode is used for events and registrations that are specific to chaincode
+//ChaincodeEvent is used for events and registrations that are specific to chaincode
 //string type - "chaincode"
 message ChaincodeEvent {
       string chaincodeID = 1;

protos/devops.proto

@@ -36,7 +36,7 @@ service Devops {
     // Invoke chaincode.
     rpc Invoke(ChaincodeInvocationSpec) returns (Response) {}
 
-    // Invoke chaincode.
+    // Query chaincode.
     rpc Query(ChaincodeInvocationSpec) returns (Response) {}
 
     // Retrieve a TCert.

protos/fabric.proto

@@ -232,7 +232,7 @@ message SyncStateSnapshotRequest {
   uint64 correlationId = 1;
 }
 
-// SyncState is the payload of Message.SYNC_SNAPSHOT, which is a response
+// SyncStateSnapshot is the payload of Message.SYNC_SNAPSHOT, which is a response
 // to penchainMessage.SYNC_GET_SNAPSHOT. It contains the snapshot or a chunk of the
 // snapshot on stream, and in which case, the sequence indicate the order
 // starting at 0.  The terminating message will have len(delta) == 0.
@@ -243,7 +243,7 @@ message SyncStateSnapshot {
     SyncStateSnapshotRequest request = 4;
 }
 
-// SyncStateRequest is the payload of Message.SYNC_GET_STATE.
+// SyncStateDeltasRequest is the payload of Message.SYNC_GET_STATE.
 // blockNumber indicates the block number for the delta which is being
 // requested. If no payload is included with SYNC_GET_STATE, it represents
 // a request for a snapshot of the current state.

protos/transaction.go

@@ -90,7 +90,7 @@ func NewChaincodeDeployTransaction(chaincodeDeploymentSpec *ChaincodeDeploymentS
 	return transaction, nil
 }
 
-// NewChaincodeExecute is used to deploy chaincode.
+// NewChaincodeExecute is used to invoke chaincode.
 func NewChaincodeExecute(chaincodeInvocationSpec *ChaincodeInvocationSpec, uuid string, typ Transaction_Type) (*Transaction, error) {
 	transaction := new(Transaction)
 	transaction.Type = typ