fix test_cosine_similarity_api failed (#26467)

python/paddle/nn/functional/common.py

@@ -680,9 +680,9 @@ def cosine_similarity(x1, x2, dim=1, eps=1e-8):
             # [0.99806249 0.9817672  0.94987036]
             
     """
-    w12 = sum(elementwise_mul(x1, x2), dim=dim)
-    w1 = sum(elementwise_mul(x1, x1), dim=dim)
-    w2 = sum(elementwise_mul(x2, x2), dim=dim)
+    w12 = sum(elementwise_mul(x1, x2), axis=dim)
+    w1 = sum(elementwise_mul(x1, x1), axis=dim)
+    w2 = sum(elementwise_mul(x2, x2), axis=dim)
     n12 = sqrt(clamp(w1 * w2, min=eps * eps))
     cos_sim = w12 / n12
     return cos_sim