update gitignore to ignore posts dir

.gitignore

@@ -1,20 +1,19 @@
 # See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
-/.obsidian
-/.idea
-/posts/.obsidian/
-/.vscode
-/.yarn
+.obsidian
+.idea
+.vscode
+.yarn
 
 # dependencies
 /node_modules
-/.pnp
+.pnp
 .pnp.js
 
 # testing
 /coverage
 
 # next.js
-/.next/
+.next/
 /out/
 
 # production
@@ -33,3 +32,6 @@ yarn-error.log*
 
 # graph data
 graph-data.json
+
+# all posts
+posts/