Display libpng version in setup (#9087)

Author: emmanuel-ferdman

setup.py

@@ -24,7 +24,7 @@
 NVCC_FLAGS = os.getenv("NVCC_FLAGS", None)
 # Note: the GPU video decoding stuff used to be called "video codec", which
 # isn't an accurate or descriptive name considering there are at least 2 other
-# video deocding backends in torchvision. I'm renaming this to "gpu video
+# video decoding backends in torchvision. I'm renaming this to "gpu video
 # decoder" where possible, keeping user facing names (like the env var below) to
 # the old scheme for BC.
 USE_GPU_VIDEO_DECODER = os.getenv("TORCHVISION_USE_VIDEO_CODEC", "1") == "1"
@@ -211,7 +211,7 @@ def find_libpng():
             subprocess.run([libpng_config, "--version"], stdout=subprocess.PIPE).stdout.strip().decode("utf-8")
         )
         if png_version < min_version:
-            warnings.warn("libpng version {png_version} is less than minimum required version {min_version}")
+            warnings.warn(f"libpng version {png_version} is less than minimum required version {min_version}")
             return False, None, None, None
 
         include_dir = (
@@ -448,7 +448,7 @@ def find_ffmpeg_libraries():
 
         extensions.append(
             CppExtension(
-                # This is an aweful name. It should be "cpu_video_decoder". Keeping for BC.
+                # This is an awful name. It should be "cpu_video_decoder". Keeping for BC.
                 "torchvision.video_reader",
                 combined_src,
                 include_dirs=[