docs/cri: update ocicrypt link

Iceber · Iceber · commit 93d4541a20d1 · 2021-05-31T15:32:30.000+08:00
Signed-off-by: Iceber Gu &lt;wei.cai-nat@daocloud.io&gt;
diff --git a/docs/cri/decryption.md b/docs/cri/decryption.md
@@ -42,4 +42,4 @@ version = 2
 In this example, container image decryption is set to use the "node" key model.
 In addition, the decryption [`stream_processors`](https://github.com/containerd/containerd/blob/master/docs/stream_processors.md) are configured as specified in [containerd/imgcrypt project](https://github.com/containerd/imgcrypt), with the additional field `--decryption-keys-path` configured to specify where decryption keys are located locally in the node.
 
-The `$OCICRYPT_KEYPROVIDER_CONFIG` environment variable is used for [ocicrypt keyprovider protocol](https://github.com/containers/ocicrypt/blob/master/docs/keyprovider.md).
+The `$OCICRYPT_KEYPROVIDER_CONFIG` environment variable is used for [ocicrypt keyprovider protocol](https://github.com/containers/ocicrypt/blob/main/docs/keyprovider.md).
