Use bullet list when there are multiple steps.

wiki/src/contribute/release_process/test/reproducibility.mdwn

@@ -71,10 +71,12 @@ following variables as instructed:
 ## Inputs from manual testers
 
 A manual tester should have sent you
-clear-signed hashes for all products of this release. Verify that the
-signature is valid and made by one of our usual manual testers, and
-put the hashes (excluding the OpenPGP signature data) into a file
-called `SHA512SUMS.txt`.
+clear-signed hashes for all products of this release. Then:
+
+1. Verify that the
+   signature is valid and made by one of our usual manual testers
+2. Put the hashes, excluding the OpenPGP signature data, into a file
+   called `SHA512SUMS.txt`.
 
 ## Your inputs