Minor documentation and comment cleanups.

jemalloc/INSTALL

@@ -39,7 +39,7 @@ any of the following arguments (not a definitive list) to 'configure':
     Disable tiny (sub-quantum-sized) object support.  Technically it is not
     legal for a malloc implementation to allocate objects with less than
     quantum alignment (8 or 16 bytes, depending on architecture), but in
-    practice it never causes any problems if, for example, 4-byte allocationsj
+    practice it never causes any problems if, for example, 4-byte allocations
     are 4-byte-aligned.
 
 --disable-mag

jemalloc/src/jemalloc.c

@@ -680,14 +680,25 @@ struct arena_s {
 	 *        3  |   16 |
 	 *        4  |   32 |
 	 *        5  |   48 |
-	 *        6  |   64 |
 	 *           :      :
-	 *           :      :
-	 *       33  |  496 |
-	 *       34  |  512 |
+	 *        8  |   96 |
+	 *        9  |  112 |
+	 *       10  |  128 |
 	 *   --------+------+
-	 *       35  | 1024 |
-	 *       36  | 2048 |
+	 *       11  |  192 |
+	 *       12  |  256 |
+	 *       13  |  320 |
+	 *       14  |  384 |
+	 *       15  |  448 |
+	 *       16  |  512 |
+	 *   --------+------+
+	 *       17  |  768 |
+	 *       18  | 1024 |
+	 *       19  | 1280 |
+	 *           :      :
+	 *       27  | 3328 |
+	 *       28  | 3584 |
+	 *       29  | 3840 |
 	 *   --------+------+
 	 */
 	arena_bin_t		bins[1]; /* Dynamically sized. */