Fix specification of current implementations

See #2

crypto_kem/kyber768/META.yml

@@ -1,6 +1,5 @@
 name: Kyber768
 type: kem
-version: https://github.com/pq-crystals/kyber/commit/ab996e7460e5356b0e23aa034e7c2fe6922e60e6
 claimed-nist-level: 3
 length-public-key: 1088
 length-ciphertext: 1152
@@ -16,3 +15,6 @@ auxiliary-submitters:
   - John M. Schanck
   - Gregor Seiler
   - Damien Stehlé
+implementations:
+    - name: clean
+      version: https://github.com/pq-crystals/kyber/commit/ab996e7460e5356b0e23aa034e7c2fe6922e60e6

crypto_sign/dilithium-iii/META.yml

@@ -1,6 +1,5 @@
 name: Dilithium-III
 type: signature
-version: https://github.com/pq-crystals/dilithium/commit/ffa89bdbc12a8ee178ccec4890aeea5449ef937a
 claimed-nist-level: 3
 length-public-key: 1472
 length-signature: 2701
@@ -13,3 +12,6 @@ auxiliary-submitters:
   - Peter Schwabe
   - Gregor Seiler
   - Damien Stehlé
+implementations:
+    - name: clean
+      version: https://github.com/pq-crystals/dilithium/commit/ffa89bdbc12a8ee178ccec4890aeea5449ef937a