Added a little clarification about "Additional new cards to simulate" (…

…#323)

* Added a little clarification about "Additional new cards to simulate"

This should make it more clear *why* this setting exists.

* Slightly changed links at teh end of Studying -> Answer Buttons

* Fixed links

src/deck-options.md

@@ -491,6 +491,7 @@ either in reviews per day or in minutes of studying per day.
 - **Additional new cards to simulate** controls whether the simulator should 
 simulate more cards than this preset already has. For example, if you currently have 100 cards under this preset,
 and you set **Additional new cards to simulate** to 50, the simulator will simulate a total of 150 cards.
+This can be useful if you plan to create more new cards in the future.
 - **New cards/day** and **Maximum reviews/day** control how many new cards will be learned each day and 
 the maximum number of reviews per day.
 - **Maximum interval** controls the maximum interval length (in days).

src/studying.md

@@ -76,7 +76,7 @@ with the answer which is shown and select any of the following button.
 
 If you find it hard to use four answer buttons, you can also use only **Again** and **Good** buttons. Use **Again** for incorrect answers and use **Good** for correct answers.
 
-Each answer button shows the next time a card will be reviewed again if you select that button. To learn about the settings that control the next review intervals, see the topics [New Cards](deck-options.md#new-cards), [Lapses](deck-options.md#lapses) and [Advanced](deck-options.md#advanced) in the Deck Options section.
+Each answer button shows the next time a card will be reviewed again if you select that button. To learn about the settings that control the next review intervals, see the topics [Learning Steps](deck-options.html#learning-steps), [Lapses](deck-options.md#lapses), [FSRS](deck-options.html#fsrs) and [Advanced](deck-options.md#advanced) in the Deck Options section.
 
 ## Fuzz Factor