Fixup comment of mbedtls_pk_can_do_ext()

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/library/pk.c b/library/pk.c
index ab443ea..5307ff3 100644
--- a/library/pk.c
+++ b/library/pk.c
@@ -328,8 +328,8 @@
             return( 1 );
 
     /*
-     * If key alg or alg2 is a hash-and-sign with a wildcard for the hash,
-     * and alg is the same hash-and-sign family with any hasor,
+     * If key_alg or key_alg2 is a hash-and-sign with a wildcard for the hash,
+     * and alg is the same hash-and-sign family with any hash,
      * then alg is compliant with this key alg
      */
     if( PSA_ALG_IS_SIGN_HASH( alg ) )