[doc, sram_ctrl] Fix incorrect table values

In `prim_mubi_pkg.sv` and `multibits.h` `MuBi4True` value is 0xA,
whilst in the SRAM documentation it was set as 0x5, which corresponds
to `MuBi4False` of the above.

closes #8917

Signed-off-by: Silvestrs Timofejevs <silvestrst@lowrisc.org>
diff --git a/hw/ip/sram_ctrl/doc/_index.md b/hw/ip/sram_ctrl/doc/_index.md
index d74daf5..1829c8e 100644
--- a/hw/ip/sram_ctrl/doc/_index.md
+++ b/hw/ip/sram_ctrl/doc/_index.md
@@ -161,12 +161,12 @@
 The different configuration options are listed in the table below:
 
 
- EN_SRAM_IFETCH (OTP) | HW_DEBUG_EN (Life Cycle) | EXEC CSR | Execution Enabled
-----------------------|--------------------------|----------|--------------------
- == 0xA5              | -                        | == 0x5   | Yes
- == 0xA5              | -                        | != 0x5   | No
- != 0xA5              | ON                       | -        | Yes
- != 0xA5              | OFF                      | -        | No
+ EN_SRAM_IFETCH (OTP)   | HW_DEBUG_EN (Life Cycle) | EXEC CSR               | Execution Enabled
+------------------------|--------------------------|------------------------|--------------------
+ == kMultiBitBool8True  | -                        | == kMultiBitBool4True  | Yes
+ == kMultiBitBool8True  | -                        | != kMultiBitBool4True  | No
+ != kMultiBitBool8True  | ON                       | -                      | Yes
+ != kMultiBitBool8True  | OFF                      | -                      | No
 
 Note that the execute from SRAM feature may only be enabled on certain SRAM controller instances in the top-level design.
 If the feature is turned off via the `InstrExec` parameter, the execute from SRAM feature is permanently disabled, and the status of the OTP chicken bit, the life cycle state and the value of the EXEC register are irrelevant.