tiny format fix for nicer man output

docs/libcurl/curl_getdate.3

@@ -9,7 +9,7 @@ curl_getdate - Convert an date string to number of seconds since January 1,
 .SH SYNOPSIS
 .B #include <curl/curl.h>
 .sp
-.BI "time_t curl_getdate(char *" datestring ", time_t *"now" );"
+.BI "time_t curl_getdate(char *" datestring ", time_t *"now " );"
 .ad
 .SH DESCRIPTION
 This function returns the number of seconds since January 1st 1970 in the UTC