[CORD-3038]v2 Ignore more files so docs lint, minor fixes

Change-Id: Iab254df5b4492014cddde43802bd0f962c7e6e8d
diff --git a/.gitignore b/.gitignore
index c19a678..e2b9ee5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,5 +4,7 @@
 # https://github.com/GitbookIO/gitbook/issues/1845
 
 npm-debug.log
-_book/
-node_modules/
+node_modules
+_book
+xos/_book
+venv-xosdocs