Update cpp/src/arrow/filesystem/s3fs.cc

Co-authored-by: Antoine Pitrou <pitrou@free.fr>

cpp/src/arrow/filesystem/s3fs.cc

@@ -2410,9 +2410,9 @@ class S3FileSystem::Impl : public std::enable_shared_from_this<S3FileSystem::Imp
                     DCHECK_GT(file_info.path().size(), bucket.size());
                     auto file_path = file_info.path().substr(bucket.size() + 1);
                     if (file_info.IsDirectory()) {
-                      // the selector returns FileInfo objects for directories with a
-                      // a path that never ends in a trailing slash, but for S3 the file
-                      // needs to have a trailing slash to recognize it as direcotory
+                      // The selector returns FileInfo objects for directories with a
+                      // a path that never ends in a trailing slash, but for AWS the file
+                      // needs to have a trailing slash to recognize it as directory
                       // (https://github.com/apache/arrow/issues/38618)
                       DCHECK_OK(internal::AssertNoTrailingSlash(file_path));
                       file_path = file_path + kSep;