Updated nroff-generated man pages

Signed-off-by: OFIWG Bot <ofiwg@lists.openfabrics.org>

man/man7/fi_lnx.7

@@ -161,7 +161,7 @@ variables:
 This environment variable is used to specify which providers to link.
 This must be set in order for the LNX provider to return a list of
 fi_info blocks in the fi_getinfo() call.
-The format which must be used is: ++\&...
+The format which must be used is: <prov1>+<prov2>+\&...
 As mentioned earlier currently LNX supports linking only two providers
 the first of which is SHM followed by one other provider for inter-node
 operations