update manpage to match curl -V features

[adgross]

The manpage for curl -V list all available features and the available features are listed by feats array. Comparing both, the manpage and curl -V output, the manpage don't list:

1. TrackMemory
2. Unicode
3. Kerberos
4. NTLM_WB
5. zstd
6. gsasl

For NTLM, the manpage list NTLM two times, probably one of them was supose to be NTLM_WB.

curl/docs/cmdline-opts/version.d

Lines 53 to 56 in 24f850f

	.IP "NTLM"
	NTLM authentication is supported.
	.IP "NTLM"
	NTLM authentication is supported.

Also, the feature "krb4" still listed in manpage, but is deprecated and is not present in feats array.

[jay]

Thanks