Fix typo in cc_toolchain_config.bzl that impacted link settings for openbsd.

Closes #10980.

PiperOrigin-RevId: 302871705
diff --git a/tools/cpp/cc_toolchain_config.bzl b/tools/cpp/cc_toolchain_config.bzl
index 358a449..f474836 100644
--- a/tools/cpp/cc_toolchain_config.bzl
+++ b/tools/cpp/cc_toolchain_config.bzl
@@ -361,7 +361,7 @@
             ],
         )
     elif (ctx.attr.cpu == "freebsd" or
-          ctx.atr.cpu == "openbsd"):
+          ctx.attr.cpu == "openbsd"):
         default_link_flags_feature = feature(
             name = "default_link_flags",
             enabled = True,