Update LBOUND and UBOUND documentation

Author: boriel

docs/lbound.md

@@ -10,18 +10,17 @@ LBound(<array variable>, <dimension>)
 
 ##Description
 
-Returns the array lower bound of the given <dimension>. If the <dimension> is not specified, it defaults to 1.
+Returns the array lower bound of the given <dimension>. If the <dimension> is not specified, it defaults to 0.
 If the specified <dimension> is 0, then total number of dimensions is returned.
 
 ##Examples
 
 ```
-DIM a(3 TO 5, 2 TO 8)
-PRINT LBound(a, 2) : REM Prints 2
-PRINT Lbound(a) : REM Prints 3, because dimension defaults to 1
+DIM a(3 TO 5, 1 TO 8)
+PRINT LBound(a, 2) : REM Prints 1
+PRINT Lbound(a) : REM Prints 2, the number of dimensions
 ```
 
-
 The result is always a 16bit integer value.
 
 If the <dimension> is 0, then the number of dimension in the array is returned

docs/ubound.md

@@ -9,15 +9,15 @@ UBound(<array variable>, <dimension>)
 
 ##Description
 
-Returns the array upper bound of the given <dimension>. If the <dimension> is not specified, it defaults to 1.
+Returns the array upper bound of the given <dimension>. If the <dimension> is not specified, it defaults to 0.
 If the specified <dimension> is 0, then total number of dimensions is returned.
 
 ##Examples
 
 ```
 DIM a(3 TO 5, 2 TO 8)
 PRINT UBound(a, 2) : REM Prints 8
-PRINT Ubound(a) : REM Prints 5, because dimension defaults to 1
+PRINT Ubound(a) : REM Prints 2, because it has 2 dimensions
 ```