setopt.3: remove leftover style change

docs/libcurl/curl_easy_setopt.3

@@ -312,8 +312,8 @@ Function pointer that should match the \fIcurl_closesocket_callback\fP
 prototype found in \fI<curl/curl.h>\fP. This function gets called by libcurl
 instead of the \fIclose(3)\fP or \fIclosesocket(3)\fP call when sockets are
 closed (not for any other file descriptors). This is pretty much the reverse
-to the \fICURLOPT_OPENSOCKETFUNCTION\fP option. \fIReturn 0 to signal success
-and 1 if there was an error.  (Option added in 7.21.7)
+to the \fICURLOPT_OPENSOCKETFUNCTION\fP option. Return 0 to signal success and
+1 if there was an error.  (Option added in 7.21.7)
 .IP CURLOPT_CLOSESOCKETDATA
 Pass a pointer that will be untouched by libcurl and passed as the first
 argument in the opensocket callback set with