Grammar and punctuation fixes.

src/objects.c

@@ -368,7 +368,7 @@ HELM("helm of telepathy", "visored helmet",
  * There is code in obj.h, objnam.c, mon.c, read.c that assumes (2).
  *      (1) The dragon scale mails and the dragon scales are together.
  *      (2) That the order of the dragon scale mail and dragon scales
- *          is the the same as order of dragons defined in monst.c.
+ *          is the same as order of dragons defined in monst.c.
  */
 #define DRGN_ARMR(name,mgc,power,cost,ac,color)  \
     ARMOR(name, None, 1, mgc, 1, power, 0, 5, 40,  \

src/pray.c

@@ -921,7 +921,7 @@ aligntyp g_align;
      *  - fix all of your problems;
      *  - do you a gratuitous favor.
      *
-     * If you make it to the the last category, you roll randomly again
+     * If you make it to the last category, you roll randomly again
      * to see what they do for you.
      *
      * If your luck is at least 0, then you are guaranteed rescued from

src/vision.c

@@ -1916,7 +1916,7 @@ char *limits;       /* points at range limit for current row, or NULL */
          * shadow limit imposed by the far block (right) then use the far
          * wall as our new far block when we recurse.
          *
-         * If the limits are the the same, and the far block really exists
+         * If the limits are the same, and the far block really exists
          * (fb_row >= 0) then do the same as above.
          *
          * Normally, the check would be for the far wall being closer OR EQUAL