Fix documentation typos.

Test: NeuralNetworksTest_static
Test: VtsHalNeuralnetworksV1_0TargetTest --hal_service_instance=android.hardware.neuralnetworks@1.0::IDevice/sample-all
Test: VtsHalNeuralnetworksV1_1TargetTest --hal_service_instance=android.hardware.neuralnetworks@1.1::IDevice/sample-all

Bug: 76016141
Bug: 67601776 (partial fix)

Change-Id: Iff881734a2aad5de9b58177111cb9793ea4853a6
(cherry picked from commit b3f0ed7adc870d7678615bc1ec572d40ad64dbb8)
diff --git a/runtime/Callbacks.h b/runtime/Callbacks.h
index ddd5700..fb9b29d 100644
--- a/runtime/Callbacks.h
+++ b/runtime/Callbacks.h
@@ -54,10 +54,6 @@
  * "notify". This "notify" call awakens any client threads waiting on the
  * callback object.
  *
- * callback object. When the asynchronous task has finished its workload or has
- * failed to launch, it must immediately call "notify", awakening any client
- * threads waiting on the callback object.
- *
  * The CallbackBase class implements some of the base synchronization common to
  * both PrepareModelCallback and ExecutionCallback. For consistency, any HIDL
  * callback class must inherit from CallbackBase as well as the HIDL callback
diff --git a/runtime/include/NeuralNetworks.h b/runtime/include/NeuralNetworks.h
index af21f3b..e1f3fc9 100644
--- a/runtime/include/NeuralNetworks.h
+++ b/runtime/include/NeuralNetworks.h
@@ -1927,7 +1927,7 @@
                                       const uint32_t* outputs);
 
 /**
- * Specfifies which operands will be the model's inputs and outputs.
+ * Specifies which operands will be the model's inputs and outputs.
  *
  * An operand cannot be used for both input and output. Doing so will
  * return an error.