howto/retire-a-host: make find more prominent

also add a wildcard to the suggested find command so that it matches
things like `hostname.torproject.org.yaml`

howto/retire-a-host.md

@@ -20,11 +20,11 @@
     TODO: cover physical machines
  5. remove from LDAP with `ldapvi` (STEP 6 above), copy-paste it in
     the ticket
- 6. do one huge power-grep over all our source code, for example with
+ 6. do one huge power-grep and find over all our source code, for example with
     unifolium that was:
 
         grep -nH -r -e 148.251.180.115 -e 2a01:4f8:211:6e8::2 -e kvm2.torproject.org  -e unifolium.torproject.org -e unifolium -e kvm2
-        find -iname unifolium
+        find -iname unifolium\*
 
     TODO: extract those values from LDAP (e.g. purpose) and run the
     grep in Fabric