chore(demo): move to right directory

apps/edit-docs/demo/root/Trilium Demo/Scripting examples/Weight Tracker/Implementation.html

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+<div style="padding: 20px">
+    <strong>See explanation <a href="https://github.com/zadam/trilium/wiki/Weight-tracker" target="_blank">here</a></strong>.
+
+    <canvas></canvas>
+</div>

apps/edit-docs/demo/root/Trilium Demo/Scripting examples/Weight Tracker/Implementation/JS code.js

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+async function getChartData() {
+    const days = await api.runOnBackend(() => {
+        const notes = api.getNotesWithLabel('weight');
+        const days = [];
+
+        for (const note of notes) {
+            const date = note.getLabelValue('dateNote');
+            const weight = parseFloat(note.getLabelValue('weight'));
+
+            if (date && weight) {
+                days.push({ date, weight });
+            }
+        }
+
+        days.sort((a, b) => a.date > b.date ? 1 : -1);
+
+        return days;
+    });
+
+    const datasets = [
+        {
+            label: "Weight (kg)",
+            backgroundColor: 'red',
+            borderColor: 'red',
+            data: days.map(day => day.weight),
+            fill: false,
+            spanGaps: true,
+            datalabels: {
+                display: false
+            },
+            tension: 0.3
+        }
+    ];
+
+    return {
+        datasets: datasets,
+        labels: days.map(day => day.date)
+    };
+}
+
+const ctx = api.$container.find("canvas")[0].getContext("2d");
+
+new chartjs.Chart(ctx, {
+    type: 'line',
+    data: await getChartData()
+});