Minor fix of typo and format.

src/qibotn/QiboCircuitConvertor.py

@@ -6,7 +6,7 @@ class QiboCircuitToEinsum:
     """Convert a circuit to a Tensor Network (TN) representation.
     The circuit is first processed to an intermediate form by grouping each gate
     matrix with its corresponding qubit it is acting on to a list. It is then
-    converted it to an equivalent TN expression through the class function
+    converted to an equivalent TN expression through the class function
     state_vector_operands() following the Einstein summation convention in the
     interleave format.
 
@@ -44,7 +44,8 @@ class QiboCircuitToEinsum:
         for key in qubits_frontier:
             out_list.append(qubits_frontier[key])
 
-        operand_exp_interleave = [x for y in zip(operands, mode_labels) for x in y]
+        operand_exp_interleave = [x for y in zip(
+            operands, mode_labels) for x in y]
         operand_exp_interleave.append(out_list)
         return operand_exp_interleave