Build 060.30: finalize Market Data Acquisition documentation

docs/stages/stage-03_3-exchange_info.md

@@ -36,4 +36,5 @@
 Добавлен метод:
 
 ```python
-validate_symbol()
+validate_symbol()
+```

docs/stages/stage-04_3-repositories.md

@@ -46,4 +46,5 @@
 - логирование через Journal
 
 ```text
-exchange → accounts service → repository → database
+exchange → accounts service → repository → database
+```

docs/stages/stage-06_2-system-settings-navigation-and-info.md

@@ -72,4 +72,5 @@
 
 ```bash
 git add .
-git commit -m "Stage 06.2 - system settings navigation and product information screens"
+git commit -m "Stage 06.2 - system settings navigation and product information screens"
+```