curl_escape.3: Add a link to curl_free

Ref: https://github.com/curl/curl/pull/5016#issuecomment-593628582

diff --git a/docs/libcurl/curl_escape.3 b/docs/libcurl/curl_escape.3
index 03f02d323634c3b1b17c305d7a9b85129a17c6bf..6c24c6617b5e2dcc67c6b33b5329cbb1d5f673ee 100644 (file)
--- a/docs/libcurl/curl_escape.3
+++ b/docs/libcurl/curl_escape.3
@@ -38,7 +38,7 @@ two-digit hexadecimal number).
 If the 'length' argument is set to 0, curl_escape() will use strlen() on the
 input 'url' string to find out the size.
 
-You must curl_free() the returned string when you're done with it.
+You must \fIcurl_free(3)\fP the returned string when you're done with it.
 .SH AVAILABILITY
 Since 7.15.4, \fIcurl_easy_escape(3)\fP should be used. This function will
 be removed in a future release.