Add counts for spa

counts.json

@@ -11,6 +11,10 @@
         "eng": {
             "num_docs": 67219545,
             "num_tokens": 63359248634
+        },
+        "spa": {
+            "num_docs": 16350291,
+            "num_tokens": 16844147076
         }
     }
 }