Update index-codecs.md

qat_deflate does not work on 2.14, it does on 2.15.

2.14:

{
  "error": {
    "root_cause": [
      {
        "type": "illegal_argument_exception",
        "reason": "unknown value for [index.codec] must be one of [default, lz4, best_compression, zlib] but was: qat_deflate"
      }
    ],
    "type": "illegal_argument_exception",
    "reason": "unknown value for [index.codec] must be one of [default, lz4, best_compression, zlib] but was: qat_deflate"
  },
  "status": 400
}

2.15:
{
  "acknowledged": true,
  "shards_acknowledged": true,
  "index": "x"
}

Signed-off-by: Sander van de Geijn <[email protected]>

_im-plugin/index-codecs.md

@@ -36,7 +36,7 @@ As of OpenSearch 2.14, hardware-accelerated compression codecs for the `DEFLATE`
 
 The new hardware-accelerated codecs can be used by setting one of the following `index.codec` values:
 * `qat_lz4` (OpenSearch 2.14 and later): Hardware-accelerated `LZ4`
-* `qat_deflate` (OpenSearch 2.14 and later): Hardware-accelerated `DEFLATE`
+* `qat_deflate` (OpenSearch 2.15 and later): Hardware-accelerated `DEFLATE`
 
 `qat_deflate` offers a much better compression ratio than `qat_lz4`, with a modest drop in compression and decompression speed.
 {: .note}