Update .env.example

Author: badmonster0

examples/amazon_s3_text_embedding/.env.example

@@ -1,8 +1,6 @@
 # Postgres database address for cocoindex
 COCOINDEX_DATABASE_URL=postgres://cocoindex:cocoindex@localhost/cocoindex
 
-# S3 bucket name for CocoIndex source
-S3_BUCKET_NAME=your-s3-bucket-name
-
-# (Optional) S3 prefix to restrict to a subfolder
-# S3_PREFIX=optional/subfolder/
+# Amazon S3 Configuration
+AMAZON_S3_BUCKET_NAME=your-bucket-name
+AMAZON_S3_PREFIX=optional/prefix/path