MVP version of new style rules guide

docs.json

@@ -63,6 +63,7 @@
                   "docs/learning-how-tos/examples-and-guides/how-to-use-context-parameter",
                   "docs/learning-how-tos/examples-and-guides/translating-between-variants",
                   "docs/learning-how-tos/examples-and-guides/glossaries-in-the-real-world",
+                  "docs/learning-how-tos/examples-and-guides/style-rules-and-custom-instructions",
                   "docs/learning-how-tos/examples-and-guides/placeholder-tags",
                   "docs/learning-how-tos/examples-and-guides/deepl-mcp-server-how-to-build-and-use-translation-in-llm-applications",
                   "docs/learning-how-tos/examples-and-guides/how-to-use-translation-memories"