Finnish: Move ruoan from pronunciation exception to a rule to include usage in compound words and inflections.

In general, most finnish exceptions should be inside rules since compound words and inflections are very common in finnish

dictsource/fi_list

@@ -366,7 +366,6 @@ ok         'o:_,ko:
 okay       okei
 yoghurt    jogurt:i
 yogurt     jogurt:i
-ruoan      ru:an
 
 
 // Abbreviations

dictsource/fi_rules

@@ -173,6 +173,8 @@
           r          r
       CA) rg (_      Rj // follow swedish pronunciation 
      _CA) rg (C     Rj  // follow swedish pronunciation 
+          ruoan      ru:an      // Pronounce ruoan as ruuan. Include all inflections and compound words.
+                               // eg. ruoanlaitto, ruoankin, arkiruoan
 
 .group s
           s          s