doc: fix typos in bootmenu.rst

%s/cammand/command/
%s/sequencies/sequences/

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/doc/usage/cmd/bootmenu.rst b/doc/usage/cmd/bootmenu.rst
index 1016ac8..9430f8c 100644
--- a/doc/usage/cmd/bootmenu.rst
+++ b/doc/usage/cmd/bootmenu.rst
@@ -12,7 +12,7 @@
 menu entry invokes an U-Boot command (or a list of commands)
 associated with this menu entry.
 
-The "bootmenu" command interprets ANSI escape sequencies, so
+The "bootmenu" command interprets ANSI escape sequences, so
 an ANSI terminal is required for proper menu rendering and item
 selection.
 
@@ -79,7 +79,7 @@
 The selected menu entry will be highlighted - it will have inverted
 background and text colors.
 
-The "bootmenu" cammand is enabled by::
+The "bootmenu" command is enabled by::
 
     CONFIG_CMD_BOOTMENU=y