Removing trailing period that can confuse a url in str_format.h.

PiperOrigin-RevId: 490329293
Change-Id: Ied36e737e85afc683cc7cc116ac6bc07092472df

absl/strings/str_format.h

@@ -193,7 +193,7 @@ class FormatCountCapture {
 // A format string generally follows the POSIX syntax as used within the POSIX
 // A format string generally follows the POSIX syntax as used within the POSIX
 // `printf` specification. (Exceptions are noted below.)
 // `printf` specification. (Exceptions are noted below.)
 //
 //
-// (See http://pubs.opengroup.org/onlinepubs/9699919799/functions/fprintf.html.)
+// (See http://pubs.opengroup.org/onlinepubs/9699919799/functions/fprintf.html)
 //
 //
 // In specific, the `FormatSpec` supports the following type specifiers:
 // In specific, the `FormatSpec` supports the following type specifiers:
 //   * `c` for characters
 //   * `c` for characters