Replace all occurrences of seperated by separated

Both in idevicediagnostics man page and in an error message
diff --git a/docs/idevicediagnostics.1 b/docs/idevicediagnostics.1
index 8a9b947..d652f39 100644
--- a/docs/idevicediagnostics.1
+++ b/docs/idevicediagnostics.1
@@ -32,7 +32,7 @@
 .TP
 .B mobilegestalt KEY [...]
 print values of mobilegestalt keys passed as arguments after the command and 
-seperated by a space.
+separated by a space.
 .TP
 .B ioreg [PLANE]
 print IORegistry of device, optionally by PLANE like "IODeviceTree", "IOPower"
diff --git a/tools/idevicediagnostics.c b/tools/idevicediagnostics.c
index 8c32854..08e7c5e 100644
--- a/tools/idevicediagnostics.c
+++ b/tools/idevicediagnostics.c
@@ -310,7 +310,7 @@
 	printf("Use diagnostics interface of a device running iOS 4 or later.\n\n");
 	printf(" Where COMMAND is one of:\n");
 	printf("  diagnostics [TYPE]\t\tprint diagnostics information from device by TYPE (All, WiFi, GasGauge, NAND)\n");
-	printf("  mobilegestalt KEY [...]\tprint mobilegestalt keys passed as arguments seperated by a space.\n");
+	printf("  mobilegestalt KEY [...]\tprint mobilegestalt keys passed as arguments separated by a space.\n");
 	printf("  ioreg [PLANE]\t\t\tprint IORegistry of device, optionally by PLANE (IODeviceTree, IOPower, IOService) (iOS 5+ only)\n");
 	printf("  ioregentry [KEY]\t\tprint IORegistry entry of device (AppleARMPMUCharger, ASPStorage, ...) (iOS 5+ only)\n");
 	printf("  shutdown\t\t\tshutdown device\n");