fix the format of CliffordGate repr.

Author: babacry

cirq-core/cirq/ops/clifford_gate.py

@@ -433,7 +433,7 @@ def __pow__(self, exponent: float) -> 'CliffordGate':
         return CliffordGate.from_clifford_tableau(base_tableau)
 
     def __repr__(self) -> str:
-        return f"Clifford Gate with Tableau:\n {self.clifford_tableau._str_full_()}"
+        return f"Clifford Gate with Tableau:\n{self.clifford_tableau._str_full_()}"
 
     def _commutes_(
         self, other: Any, *, atol: float = 1e-8