Merge pull request #1324 from Flowdalic/patch-4

Make ScriptSig description a bit more verbose

_data/glossary/en/signature-script.yaml

@@ -8,8 +8,8 @@ required:
 
     summary_max_255_characters_no_formatting: >
         Data generated by a spender which is almost always used as
-        variables to satisfy a pubkey script. Called a scriptSig in
-        code.
+        variables to satisfy a pubkey script. Signature Scripts are called
+        scriptSig in code.
 
     synonyms_shown_in_glossary_capitalize_first_letter:
         - Signature script