Add an additional < marker in comment blocks after the documented functions (#32114)

* Add an additional < marker in the comment block for documentation block
after the member

* review

include/grpc/support/time.h

@@ -54,10 +54,12 @@ typedef struct gpr_timespec {
 } gpr_timespec;
 
 /** Time constants. */
-GPRAPI gpr_timespec
-gpr_time_0(gpr_clock_type type); /** The zero time interval. */
-GPRAPI gpr_timespec gpr_inf_future(gpr_clock_type type); /** The far future */
-GPRAPI gpr_timespec gpr_inf_past(gpr_clock_type type);   /** The far past. */
+/** The zero time interval. */
+GPRAPI gpr_timespec gpr_time_0(gpr_clock_type type);
+/** The far future */
+GPRAPI gpr_timespec gpr_inf_future(gpr_clock_type type);
+/** The far past. */
+GPRAPI gpr_timespec gpr_inf_past(gpr_clock_type type);
 
 #define GPR_MS_PER_SEC 1000
 #define GPR_US_PER_SEC 1000000