Format string in GettingStarted.scala is missing matching param and causing runtime failure

Looks like the missing param is `name`, Simple fix. I noticed this last night at Boston Scala.
**Before**
```
[info] Running fpinscala.gettingstarted.FormatAbsAndFactorial
[error] (run-main) java.util.MissingFormatArgumentException: Format specifier 'd'
java.util.MissingFormatArgumentException: Format specifier 'd'
	at java.util.Formatter.format(Formatter.java:2487)
	at java.util.Formatter.format(Formatter.java:2423)
	at java.lang.String.format(String.java:2797)
	at scala.collection.immutable.StringLike$class.format(StringLike.scala:266)
	at scala.collection.immutable.StringOps.format(StringOps.scala:31)
	at fpinscala.gettingstarted.MyModule$.formatResult(GettingStarted.scala:51)
```

**After**
```
[info] Running fpinscala.gettingstarted.FormatAbsAndFactorial
The absolute value of -42 is 42.
The factorial of 7 is 5040.
```