binman: Fix typo in kernel-doc format for binman_symname()

Fix typo.

Fixes: 19790632 ("binman: Support accessing binman tables at run time")
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NSimon Glass <sjg@chromium.org>

include/binman_sym.h

@@ -16,7 +16,7 @@
 #ifdef CONFIG_BINMAN
 
 /**
- * binman_symname() - Internal fnuction to get a binman symbol name
+ * binman_symname() - Internal function to get a binman symbol name
  *
  * @entry_name: Name of the entry to look for (e.g. 'u_boot_spl')
  * @_prop_name: Property value to get from that entry (e.g. 'pos')