[FAB-8194]Fix docs format of Chaincode for Operators

The document format is broken in
fabric/docs/source/chaincode4noah.rst.
The usage of CLI is not displayed correctly.

This CR fix the format correctly.

Change-Id: Ic4fe087c0a4122d1cbe291e4444e07dc3b31db9b
Signed-off-by: Yuki Kondo <yuki.kondo@hal.hitachi.com>

docs/source/chaincode4noah.rst

@@ -318,32 +318,32 @@ Which shows output similar to the example below:
 
 .. code:: bash
 
-  Usage:
-    peer chaincode [command]
-
-  Available Commands:
-    install     Package the specified chaincode into a deployment spec and save it on the peer's path.
-    instantiate Deploy the specified chaincode to the network.
-    invoke      Invoke the specified chaincode.
-    list        Get the instantiated chaincodes on a channel or installed chaincodes on a peer.
-    package     Package the specified chaincode into a deployment spec.
-    query       Query using the specified chaincode.
-    signpackage Sign the specified chaincode package
-    upgrade     Upgrade chaincode.
-
-  Flags:
-      --cafile string      Path to file containing PEM-encoded trusted certificate(s) for the ordering endpoint
-  -h, --help               help for chaincode
-  -o, --orderer string     Ordering service endpoint
-      --tls                Use TLS when communicating with the orderer endpoint
-      --transient string   Transient map of arguments in JSON encoding
-
-Global Flags:
-      --logging-level string       Default logging level and overrides, see core.yaml for full syntax
-      --test.coverprofile string   Done (default "coverage.cov")
-  -v, --version
-
-  Use "peer chaincode [command] --help" for more information about a command.
+    Usage:
+      peer chaincode [command]
+
+    Available Commands:
+      install     Package the specified chaincode into a deployment spec and save it on the peer's path.
+      instantiate Deploy the specified chaincode to the network.
+      invoke      Invoke the specified chaincode.
+      list        Get the instantiated chaincodes on a channel or installed chaincodes on a peer.
+      package     Package the specified chaincode into a deployment spec.
+      query       Query using the specified chaincode.
+      signpackage Sign the specified chaincode package
+      upgrade     Upgrade chaincode.
+
+    Flags:
+          --cafile string      Path to file containing PEM-encoded trusted certificate(s) for the ordering endpoint
+      -h, --help               help for chaincode
+      -o, --orderer string     Ordering service endpoint
+          --tls                Use TLS when communicating with the orderer endpoint
+          --transient string   Transient map of arguments in JSON encoding
+
+    Global Flags:
+          --logging-level string       Default logging level and overrides, see core.yaml for full syntax
+          --test.coverprofile string   Done (default "coverage.cov")
+      -v, --version
+
+    Use "peer chaincode [command] --help" for more information about a command.
 
 To facilitate its use in scripted applications, the ``peer`` command always
 produces a non-zero return code in the event of command failure.