docs: add docs on restoring to PSQL server (#1584)

* docs: add docs on restoring to PSQL server

* prevent iframe in netlify site

netlify.toml

@@ -3,5 +3,11 @@ publish = "docs/site/"
 command = """
 pip3 install mkdocs-material &&
 cd docs &&
-mkdocs build 
-"""
+mkdocs build
+"""
+
+[[headers]]
+  for = "/*"
+  [headers.values]
+    X-Frame-Options = "DENY"
+    X-XSS-Protection = "1; mode=block"