utils: fix typos

Thanks to Daniel Stirnimann!

doc/man/keymgr.8in

@@ -43,7 +43,7 @@ Functions for DNSSEC keys and KASP (Key And Signature Policy)
 management are provided.
 .sp
 The DNSSEC and KASP configuration is stored in a so called KASP database.
-The databse is backed by LMDB.
+The database is backed by LMDB.
 .SS Basic options
 .INDENT 0.0
 .TP

doc/man_keymgr.rst

@@ -19,7 +19,7 @@ Functions for DNSSEC keys and KASP (Key And Signature Policy)
 management are provided.
 
 The DNSSEC and KASP configuration is stored in a so called KASP database.
-The databse is backed by LMDB.
+The database is backed by LMDB.
 
 Basic options
 .............

src/utils/knotc/commands.c

@@ -1106,7 +1106,7 @@ static const cmd_help_t cmd_help_table[] = {
 	{ CMD_ZONE_RETRANSFER, "[<zone>...]",                            "Force slave zone retransfer (no serial check)." },
 	{ CMD_ZONE_FLUSH,      "[<zone>...] [<filter>...]",              "Flush zone journal into the zone file." },
 	{ CMD_ZONE_SIGN,       "[<zone>...]",                            "Re-sign the automatically signed zone." },
-	{ CMD_ZONE_KSK_SBM,    "<zone>",                                 "When KSK submission, confirm parent's DS presence manualy." },
+	{ CMD_ZONE_KSK_SBM,    "<zone>",                                 "When KSK submission, confirm parent's DS presence manually." },
 	{ CMD_ZONE_FREEZE,     "[<zone>...]",                            "Temporarily postpone automatic zone-changing events." },
 	{ CMD_ZONE_THAW,       "[<zone>...]",                            "Dismiss zone freeze." },
 	{ "",                  "",                                       "" },