very minor phrase edit

docs/libcurl/curl_easy_setopt.3

@@ -271,7 +271,7 @@ name.
 Pass a long, this sets the timeout in seconds. Name resolves will be kept in
 memory for this number of seconds. Set to zero (0) to completely disable
 caching, or set to -1 to make the cached entries remain forever. By default,
-libcurl caches info for 60 seconds.
+libcurl caches this info for 60 seconds.
 .IP CURLOPT_DNS_USE_GLOBAL_CACHE
 Pass a long. If the value is non-zero, it tells curl to use a global DNS cache
 that will survive between easy handle creations and deletions. This is not