Fix wording in RSYNC_PORT section (#293)

Fix wording from 'does is not read' -> 'is not read'

diff --git a/rsync.1.md b/rsync.1.md
index 563f835b0addc88a0e5c3850087986d97a3085b6..e20706dd2fca519176ea7dabf4b0e0b44757f7a8 100644 (file)
--- a/rsync.1.md
+++ b/rsync.1.md
@@ -4437,7 +4437,7 @@ file is included or excluded.
 
 0. `RSYNC_PORT`
 
-    This environment variable does is not read by rsync, but is instead set in
+    This environment variable is not read by rsync, but is instead set in
     its sub-environment when rsync is running the remote shell in combination
     with a daemon connection.  This allows a script such as
     [`rsync-ssl`](rsync-ssl.1) to be able to know the port number that the user