Documentation/ABI/configfs-tsm: Fix an unexpected indentation silly

Fix:

  Documentation/ABI/testing/configfs-tsm:97: ERROR: Unexpected indentation

when building htmldocs with sphinx. I can't say I'm loving those rigid
sphinx rules but whatever, make it shut up.

Fixes: 627dc671 ("x86/sev: Extend the config-fs attestation support for an SVSM")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Link: https://lore.kernel.org/r/20240701184557.4735ca3d@canb.auug.org.au

Documentation/ABI/testing/configfs-tsm

@@ -103,8 +103,7 @@ Description:
 		provider for TVMs, like SEV-SNP running under an SVSM.
 		Specifying the service provider via this attribute will create
 		an attestation report as specified by the service provider.
-		Currently supported service-providers are:
-			svsm
+		The only currently supported service provider is "svsm".
 
 		For the "svsm" service provider, see the Secure VM Service Module
 		for SEV-SNP Guests v1.00 Section 7. For the doc, search for