rename Raw* to Deflate*

Author: bicycle1885

README.md

@@ -15,8 +15,8 @@ listed below:
     - `GzipDecompression` (`GzipDecompressionStream`)
     - `ZlibCompression` (`ZlibCompressionStream`)
     - `ZlibDecompression` (`ZlibDecompressionStream`)
-    - `RawCompression` (`RawCompressionStream`)
-    - `RawDecompression` (`RawDecompressionStream`)
+    - `DeflateCompression` (`DeflateCompressionStream`)
+    - `DeflateDecompression` (`DeflateDecompressionStream`)
 - [CodecZstd.jl](https://github.com/bicycle1885/CodecZstd.jl)
     - `ZstdCompression` (`ZstdCompressionStream`)
     - `ZstdDecompression` (`ZstdDecompressionStream`)