fix formatting flaw

docs/libcurl/curl_easy_setopt.3

@@ -480,7 +480,7 @@ used POST method).
 
 Use the \fICURLOPT_POSTFIELDS\fP option to specify what data to post and
 \fICURLOPT_POSTFIELDSIZE\fP to set the data size. Optionally, you can provide
-data to POST using the \fICURLOPT_READFUNCTION\FP and \fICURLOPT_READDATA\fP
+data to POST using the \fICURLOPT_READFUNCTION\fP and \fICURLOPT_READDATA\fP
 options.
 
 You can override the default POST Content-Type: header by setting your own