Missing statistics reference in documentation

mkdocs.yml

@@ -63,6 +63,7 @@ nav:
       - usage/datasets/index.md
       - Dataset extraction: usage/datasets/extract.md
       - Dataset formatting: usage/datasets/format.md
+      - Dataset analysis: usage/datasets/analyze.md
     - Training:
       - usage/train/index.md
       - Parameters: usage/train/parameters.md
@@ -83,6 +84,9 @@ nav:
       - Formatting:
         - ref/datasets/format/index.md
         - Automatic Text Recognition: ref/datasets/format/atr.md
+      - Analysis:
+        - ref/datasets/analyze/index.md
+        - Statistics: ref/datasets/analyze/statistics.md
     - OCR:
       - ref/ocr/index.md
       - Managers: