drivers: sdhc: Fix acronym expansion for SD Host Controller in Kconfig

Fixes an issue in which "SDHC" had been incorrectly expanded to
"Secure Digital High Capacity" instead of "SD Host Controller".

Signed-off-by: Egill Sigurdur <egill@egill.xyz>

drivers/sdhc/Kconfig

@@ -2,9 +2,9 @@
 # SPDX-License-Identifier: Apache-2.0
 
 menuconfig SDHC
-	bool "Secure Digital High Capacity (SDHC) drivers"
+	bool "Secure Digital (SD card) host controller drivers"
 	help
-	  Include drivers for SD host controller
+	  Include drivers for interacting with SD cards
 
 if SDHC