bssl-crypto: fix typo in error string

Change-Id: Ie3749f20bf3cbe574d0c7861bc726cb70c51abf0
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/86768
Commit-Queue: Adam Langley <agl@google.com>
Auto-Submit: Adam Langley <agl@google.com>
Reviewed-by: Lily Chen <chlily@google.com>
Commit-Queue: Lily Chen <chlily@google.com>

rust/bssl-crypto/src/cipher/mod.rs

diff --git a/rust/bssl-crypto/src/cipher/mod.rs b/rust/bssl-crypto/src/cipher/mod.rs
index 7d0a12b..8998114 100644
--- a/rust/bssl-crypto/src/cipher/mod.rs
+++ b/rust/bssl-crypto/src/cipher/mod.rs
@@ -187,7 +187,7 @@
         assert_eq!(
             self.cipher_mode(),
             bssl_sys::EVP_CIPH_CTR_MODE as u32,
-            "Cannot use apply_keystraem_in_place for non-CTR modes"
+            "Cannot use apply_keystream_in_place for non-CTR modes"
         );
         let mut cslice_buf_mut = CSliceMut::from(buffer);
         let mut out_len = 0;