update comments

script/texdoclib-score.tlu

@@ -215,7 +215,7 @@ local function set_score(df, original_kw)
     if not is_alias then
         local file_lang
 
-        -- from its catalog
+        -- from its catalogue
         if df.lang then
             -- take first two letters; it may have country codes
             file_lang = df.lang:sub(1, 2)
@@ -232,7 +232,8 @@ local function set_score(df, original_kw)
             dbg_score('Locale match bonus: +1.0')
         elseif file_lang ~= nil and file_lang ~= 'en' then
             -- normally, english documents do not have file_lang,
-            -- but sometimes the catalog includes en info (e.g., geometry)
+            -- but sometimes catalogue includes en info (e.g., geometry)
+            -- we want to treat both cases similar
             score = score - 0.1
             dbg_score('Locale unmatch: -0.1')
         end