[tests] fix typo in pag tests (#8845)

* fix typo in pag tests

* fix typo

tests/pipelines/pag/test_pag_controlnet_sd.py

@@ -173,7 +173,7 @@ class StableDiffusionControlNetPAGPipelineFastTests(
         del inputs["pag_scale"]
         assert (
             "pag_scale" not in inspect.signature(pipe_sd.__call__).parameters
-        ), f"`pag_scale` should not be a call parameter of the base pipeline {pipe_sd.__calss__.__name__}."
+        ), f"`pag_scale` should not be a call parameter of the base pipeline {pipe_sd.__class__.__name__}."
         out = pipe_sd(**inputs).images[0, -3:, -3:, -1]
 
         # pag disabled with pag_scale=0.0

tests/pipelines/pag/test_pag_controlnet_sdxl.py

@@ -193,7 +193,7 @@ class StableDiffusionXLControlNetPAGPipelineFastTests(
         del inputs["pag_scale"]
         assert (
             "pag_scale" not in inspect.signature(pipe_sd.__call__).parameters
-        ), f"`pag_scale` should not be a call parameter of the base pipeline {pipe_sd.__calss__.__name__}."
+        ), f"`pag_scale` should not be a call parameter of the base pipeline {pipe_sd.__class__.__name__}."
         out = pipe_sd(**inputs).images[0, -3:, -3:, -1]
 
         # pag disabled with pag_scale=0.0

tests/pipelines/pag/test_pag_sd.py

@@ -157,7 +157,7 @@ class StableDiffusionPAGPipelineFastTests(
         del inputs["pag_scale"]
         assert (
             "pag_scale" not in inspect.signature(pipe_sd.__call__).parameters
-        ), f"`pag_scale` should not be a call parameter of the base pipeline {pipe_sd.__calss__.__name__}."
+        ), f"`pag_scale` should not be a call parameter of the base pipeline {pipe_sd.__class__.__name__}."
         out = pipe_sd(**inputs).images[0, -3:, -3:, -1]
 
         # pag disabled with pag_scale=0.0

tests/pipelines/pag/test_pag_sdxl.py

@@ -170,7 +170,7 @@ class StableDiffusionXLPAGPipelineFastTests(
         del inputs["pag_scale"]
         assert (
             "pag_scale" not in inspect.signature(pipe_sd.__call__).parameters
-        ), f"`pag_scale` should not be a call parameter of the base pipeline {pipe_sd.__calss__.__name__}."
+        ), f"`pag_scale` should not be a call parameter of the base pipeline {pipe_sd.__class__.__name__}."
         out = pipe_sd(**inputs).images[0, -3:, -3:, -1]
 
         # pag disabled with pag_scale=0.0