Fix the rendering issue

doc/source/getting-started/quickstart.rst

@@ -3,27 +3,32 @@ Quick start
 
 Setting the backend
 """""""""""""""""""
-QiboTN supports two backends cutensornet (using CuQuantum library) and Quimbbackend (using Quimb library) for tensor network based simulations. The backend can be set using the following command line.
 
-For CuQuantum library,
+QiboTN supports two backends: cutensornet (using cuQuantum library) and QuimbBackend (using Quimb library) for tensor network based simulations. The backend can be set using the following command line.
 
-.. testcode::
-   qibo.set_backend(backend="qibotn", platform="cutensornet", runcard=computation_settings)
-..
+To use cuQuantum library, cutensornet can be specified as follows:
 
-and for Quimb library
+.. code-block:: bash
+
+   qibo.set_backend(
+      backend="qibotn", platform="cutensornet", runcard=computation_settings
+   )
+
+Similarly, to use Quimb library, QuimbBackend can be as follows:
+
+.. code-block:: bash
 
-.. testcode::
    qibo.set_backend(
        backend="qibotn", platform="QuimbBackend", runcard=computation_settings
    )
-..
 
 Setting the runcard
 """""""""""""""""""
-Basic structure of runcard is
 
-.. testcode::
+The basic structure of the runcard is as follows:
+
+.. code-block:: bash
+
    computation_settings = {
        "MPI_enabled": False,
        "MPS_enabled": False,
@@ -32,14 +37,17 @@ Basic structure of runcard is
            "pauli_string_pattern": "IXZ",
        },
    }
-..
 
 Basic example
 """""""""""""
 
-.. testcode::
+The following is a basic example:
+
+.. code-block:: bash
+
    # Construct the circuit
    c = Circuit(2)
+
    # Add some gates
    c.add(gates.H(0))
    c.add(gates.H(1))
@@ -48,5 +56,3 @@ Basic example
    result = c()
 
    print(result.state())
-
-..