Counters - Timers documentation issue

[M0stafaRady]

Table 16 of the counter documentation isn't aligned with the description inside the test cases.

Bits description inside test cases:

        /* Timer configuration bits:				*/
	/* 0 = timer enable (1 = enabled, 0 = disabled)		*/
	/* 1 = one-shot mode (1 = oneshot, 0 = continuous)	*/
	/* 2 = up/down (1 = count up, 0 = count down)		*/
	/* 3 = chain (1 = enabled, 0 = disabled)		*/
	/* 4 = IRQ enable (1 = enabled, 0 = disabled)		*/

[RTimothyEdwards]

This documentation corresponds to the MPW-one version of Caravel which used my counter/timer module. The documentation will need to be replaced with that generated from LiteX, since (as far as I know) the existing counter/timer comes from LiteX.