content: Fix gender in cloze and pictures of sizes

Because
- there is a mistake in an exercise
  where the sentence is not semantically coherent
- the picture used for small, medium and large doesn't distinguish

This commit will
- fix the grammatical mistake to use the correct word
- add 3 new pictures highlighting the size corresponding to the words
  for small, medium and large

**Certification**
- [X] I certify that <!-- Check the box to certify: [X] -->
- I have read the [contributing guidelines](
  https://github.com/nodepa/seedling/blob/main/.github/CONTRIBUTING.md)
- I license these contributions to the public under Seedling's
  [LICENSE](https://github.com/nodepa/seedling/blob/main/LICENSE.md)
  and have the rights to do so.

Signed-off-by: toshify <4579559+toshify@users.noreply.github.com>

app/commitlint.config.js

@@ -88,7 +88,7 @@ module.exports = {
           when = 'always',
         ) {
           const negated = when == 'never';
-          const includesMotivation = `${body}`.includes('Because ');
+          const includesMotivation = (`${body}`.match(/^[Bb]ecause[.\n]/) != null);
           return [
             negated ? !includesMotivation : includesMotivation,
             'body ' +

content/Lesson11.json

@@ -8,7 +8,7 @@
   "singleClozeCount": 0,
   "multiClozeCount": 12,
   "comprehensionCount": 0,
-  "wordsExercisedCount": 32,
+  "wordsExercisedCount": 33,
   "exercises": [
     {
       "id": "6b941a32-89f3-4436-ac53-f2769cb0d3b3",
@@ -347,7 +347,7 @@
           { "个": "90f79865-ac90-4644-9a8b-88eaad30e979" },
           {
             "validOptions": [
-              { "外甥女": "b6ebbe69-9834-41f3-a353-4a9142d599b3" }
+              { "外甥": "54ff3fa1-141e-4620-861d-335376b3f8f2" }
             ]
           },
           { "。": "5d0f410c-83ff-43bd-a31e-922b42b054ef" }

content/WordSpec.json

@@ -691,17 +691,17 @@
     "bdc5f8ba-117c-433e-9325-68e8c0a71bdf": {
       "word": "小",
       "audio": "audio/小.mp3",
-      "picture": "pics/小中大.jpg"
+      "picture": "pics/小.jpg"
     },
     "253fd710-528f-4749-83c8-a3e1eda9fd64": {
       "word": "中",
       "audio": "audio/中.mp3",
-      "picture": "pics/小中大.jpg"
+      "picture": "pics/中.jpg"
     },
     "f2c41150-06fb-4c45-be9d-6caa65d66ee2": {
       "word": "大",
       "audio": "audio/大.mp3",
-      "picture": "pics/小中大.jpg"
+      "picture": "pics/大.jpg"
     },
     "37932876-7996-4dfc-9e4e-54f3a6bee6da": {
       "word": "学",