fix typos triggle (PaddlePaddle#76417)

Author: co63oc

test/auto_parallel/pir/mlp_demo.py

@@ -59,12 +59,12 @@ def __init__(self, mesh1, mesh2):
 
     def forward(self, x):
         x.stop_gradient = False
-        out = self.relu_0(x)  # triggle backward partial allreduce
+        out = self.relu_0(x)  # trigger backward partial allreduce
         out = self.linear_0(out)
         out = self.relu_1(out)
         out = dist.reshard(out, self._mesh2, [dist.Replicate()])
         out = self.linear_1(out)
-        out = self.relu_2(out)  # triggle forward partial allreduce
+        out = self.relu_2(out)  # trigger forward partial allreduce
         out = paddle.cast(out, 'float32')
         return out