Make I18N format errors less spammy, also remove single apostrophes from

current translations in en_us.json. Other langs may still have problems.

Closes #5952
Signed-off-by: cpw <cpw+github@weeksfamily.ca>

src/main/java/net/minecraftforge/fml/ForgeI18n.java

@@ -91,7 +91,7 @@ public class ForgeI18n {
         try {
             return parseFormat(pattern, args);
         } catch (IllegalArgumentException e) {
-            LOGGER.error("Illegal format found {}", pattern, e);
+            LOGGER.error(CORE,"Illegal format found `{}`", pattern);
             return pattern;
         }
     }