Fix typo: seperate -> separate.

Seperate does not exist in the english language.

Also add $FreeBSD$ to README.

usr.bin/telnet/README

@@ -1,3 +1,4 @@
+# $FreeBSD$
 
 This is a distribution of both client and server telnet.  These programs
 have been compiled on:
@@ -430,7 +431,7 @@ September 14, 1990:
 	one of them is undefined, and the other one is not already
 	defined to the telnet escape character.
 
-	Handle TERMIOS systems that have seperate input and output
+	Handle TERMIOS systems that have separate input and output
 	line speed settings imbedded in the flags.
 
 	Many other minor bug fixes.
@@ -440,7 +441,7 @@ June 20, 1990:
 	directory is now gone, and all the source that was in
 	telnet/Source is now just in the telnet directory.
 
-	Seperate makefile for each system are now gone.  There
+	Separate makefile for each system are now gone.  There
 	are two makefiles, Makefile and Makefile.generic.
 	The "Makefile" has the definitions for the various
 	system, and "Makefile.generic" does all the work.
@@ -496,7 +497,7 @@ June 20, 1990:
 	option turned back off!
 
 	Fix the TERMIOS setting of the terminal speed to handle both
-	BSD's seperate fields, and the SYSV method of CBAUD bits.
+	BSD's separate fields, and the SYSV method of CBAUD bits.
 
 	Change how we deal with the other side refusing to enable
 	an option.  The sequence used to be: send DO option; receive

usr.bin/telnet/telnet.c

@@ -602,7 +602,7 @@ dontoption(option)
 
 /*
  * Given a buffer returned by tgetent(), this routine will turn
- * the pipe seperated list of names in the buffer into an array
+ * the pipe separated list of names in the buffer into an array
  * of pointers to null terminated names.  We toss out any bad,
  * duplicate, or verbose names (names with spaces).
  */