silly typo, pointed out by Fabian Keil

docs/curl.1

@@ -957,7 +957,7 @@ instead of PORT by using \fI--disable-eprt\fP. EPRT is really PORT++.
 Starting in 7.19.5, you can append \&":[start]-[end]\&" to the right of the
 address, to tell curl what TCP port range to use. That means you specify a
 port range, from a lower to a higher number. A single number works as well,
-but do not that it increases the risk of failure since the port may not be
+but do note that it increases the risk of failure since the port may not be
 available.
 .IP "-q"
 If used as the first parameter on the command line, the \fIcurlrc\fP config

docs/libcurl/curl_easy_setopt.3

@@ -1073,7 +1073,7 @@ address. Default FTP operations are passive, and thus won't use PORT.
 Starting in 7.19.5, you can append \&":[start]-[end]\&" to the right of the
 address, to tell libcurl what TCP port range to use. That means you specify a
 port range, from a lower to a higher number. A single number works as well,
-but do not that it increases the risk of failure since the port may not be
+but do note that it increases the risk of failure since the port may not be
 available.
 
 You disable PORT again and go back to using the passive version by setting