Fix release note typos.

releasenotes/notes/fix-collect-clifford-83af26d98b8c69e8.yaml

@@ -1,6 +1,6 @@
 ---
 fixes:
   - |
-    Add more Clifford gates to the :class:`.CollectCliffords()` transpiler pass.
-    In particular, we have added the gates :class:`ECRGate()`, :class:`DCXGate()`,
-    :class:`iSWAPGate()`, :class:`SXGate()` and :class:`SXdgGate()` to this transpiler pass.
+    Added missing Clifford gates to the :class:`.CollectCliffords` transpiler pass.
+    In particular, we have added the gates :class:`.ECRGate`, :class:`.DCXGate`,
+    :class:`.iSWAPGate`, :class:`.SXGate` and :class:`.SXdgGate` to this transpiler pass.

releasenotes/notes/fix-sk-load-from-file-02c6eabbbd7fcda3.yaml

@@ -2,7 +2,7 @@
 fixes:
   - |
     Fix the :class:`.SolovayKitaev` transpiler pass when loading basic
-    approximations from an exising ``.npy`` file. Previously, loading
+    approximations from an existing ``.npy`` file. Previously, loading
     a stored approximation which allowed for further reductions (e.g. due
     to gate cancellations) could cause a runtime failure.
     Additionally, the global phase difference of the U(2) gate product

releasenotes/notes/fixes_GenericBackendV2-668e40596e1f070d.yaml

@@ -1,4 +1,4 @@
 ---
 fixes:
   - |
-    The constructor :class:`.GenericBackendV2` was allowing to create malformed backends because it accepted basis gates that couldn't be allocated in the backend size . That is, a backend with a single qubit should not accept a basis with two-qubit gates.
+    The constructor :class:`.GenericBackendV2` previously allowed malformed backends to be constructed because it accepted basis gates that couldn't be allocated given the backend size. For example, a backend with a single qubit could previously accept a basis with two-qubit gates.

releasenotes/notes/raise-on-illegal-replace-block-50cef8da757a580a.yaml

@@ -1,7 +1,7 @@
 ---
 fixes:
   - |
-    Previously, :meth:`.DAGCircuit.replace_block_with_op` allowed to place an
-    ``n``-qubit operation onto a block of ``m`` qubits, leaving the DAG in an
-    invalid state. This behavior has been fixed, and the attempt will raise
-    a :class:`.DAGCircuitError`.
+    Previously, :meth:`.DAGCircuit.replace_block_with_op` allowed an
+    ``n``-qubit operation to be placed onto a block of ``m`` qubits, leaving the DAG in an
+    invalid state. This behavior has been fixed, and any attempt to do this will now raise
+    a :class:`.DAGCircuitError` as expected.