Document treated wood doors in manual

src/main/resources/assets/immersiveengineering/manual/autoload.json

@@ -50,7 +50,7 @@
       "posts_and_wallmounts",
       "scaffolding_and_ladders",
       "catwalks",
-      "steel_doors_and_trapdoors",
+      "doors_and_trapdoors",
       "metal_constructions",
       "windows",
       "engineered_lighting",

src/main/resources/assets/immersiveengineering/manual/doors_and_trapdoors.json

@@ -0,0 +1,34 @@
+{
+  "treated_wood": {
+    "type": "crafting",
+    "recipes": [
+      [
+        {
+          "recipe": "crafting/treated_door"
+        },
+        {
+          "recipe": "crafting/treated_trapdoor"
+        },
+        {
+          "recipe": "crafting/treated_door_framed_from_treated_door"
+        },
+        {
+          "recipe": "crafting/treated_trapdoor_framed_from_treated_trapdoor"
+        }
+      ]
+    ]
+  },
+  "steel": {
+    "type": "crafting",
+    "recipes": [
+      [
+        {
+          "recipe": "crafting/steel_door"
+        },
+        {
+          "recipe": "crafting/steel_trapdoor"
+        }
+      ]
+    ]
+  }
+}

src/main/resources/assets/immersiveengineering/manual/en_us/doors_and_trapdoors.txt

@@ -0,0 +1,7 @@
+Doors & Trapdoors
+Vitrified 06/15/1961
+<&treated_wood>Treated Wood Doors and Trapdoors are nothing special, only a fancier version of the standard wooden door.<br>
+They are made with treated wood planks and come in steel-framed and wooden variants.
+<&steel>Steel Doors and Trapdoors are a more secure variant of iron doors, suitable for uses in high-security facilities.<br>
+Unlike iron doors, they respond to normal opening procedures instead of only opening when a redstone signal is applied.<br>
+When a redstone signal is applied, a locking mechanism activates and the door cannot be opened until the signal is disabled.