fix 2 minor typos (#2296)

Author: internet-account2

helpers.json

@@ -3,7 +3,7 @@
   "helperCategories": [
     {
       "name": "Randomizer Dependent",
-      "description": "Common parameters than may be changed based on the randomizer implementation or settings.",
+      "description": "Common parameters that may be changed based on the randomizer implementation or settings.",
       "helpers": [
         {
           "name": "h_heatProof",

tech.json

@@ -2809,7 +2809,7 @@
                 "modifying where Samus is placed in the next room.",
                 "Exiting G-mode will teleport Samus to position where she touched the Samus Eater.",
                 "At the start of the door transition, Samus' X and Y pixel positions are reduced modulo 256 (the size of a screen),",
-                "so the relative position within the screen is all the matters (not the absolute position in the room).",
+                "so the relative position within the screen is all that matters (not the absolute position in the room).",
                 "The transition must be touched exactly 2 frames after control is regained after releasing X-Ray."
               ],
               "detailNote": [