Refine comment

Author: vacantron

src/jit.h

@@ -57,7 +57,7 @@ typedef void (*exec_t2c_func_t)(riscv_t *);
 #if RV32_HAS(JIT_CACHE)
 /* The jit-cache records the program counters and the entries of executable
  * instructions generated by T2C. Like hardware cache, the old jit-cache will be
- * overridden by the new one which uses the same slot.
+ * replaced by the new one which uses the same slot.
  */
 #define MAX_JIT_CACHE_TABLE_ENTRIES (1 << 12)