Add new doc describing mintignore (#1910)

* Add new doc for mintignore

Add new doc for mintignore

* revert docs.json

title

* Add mintignore to docs.json

title

* rename to match file name and title

* Update docs.json

* copyedit

---------

Co-authored-by: Ethan Palm <56270045+ethanpalm@users.noreply.github.com>

Author: k-finken

docs.json

@@ -40,7 +40,8 @@
                   "organize/settings",
                   "organize/navigation",
                   "organize/pages",
-                  "organize/hidden-pages"
+                  "organize/hidden-pages",
+                  "organize/mintignore"
                 ]
               },
               {

organize/mintignore.mdx

@@ -0,0 +1,48 @@
+---
+title: "Mintignore"
+description: "Exclude specific files and directories from your published documentation."
+keywords: ["exclude", "ignore", "gitignore", "drafts", "private"]
+---
+
+The `.mintignore` file allows you to exclude specific files and directories from being processed and published to your documentation site.
+
+Use `.mintignore` to keep drafts, internal notes, and source files out of your public documentation while maintaining them in your repository.
+
+## Create a .mintignore file
+
+Create a `.mintignore` file in the root of your docs directory. This file uses the same pattern syntax as `.gitignore`.
+
+```plaintext .mintignore
+# Exclude draft documents
+drafts/
+*.draft.mdx
+
+# Exclude internal documentation
+internal/
+
+# Exclude specific files
+private-notes.md
+```
+
+When Mintlify builds your documentation, it reads the `.mintignore` file and excludes any matching files or directories from processing.
+
+Excluded files:
+- Don't appear in your published documentation.
+- Aren't indexed for search.
+- Aren't accessible to visitors.
+
+<Note>
+  Unlike [hidden pages](/organize/hidden-pages), files excluded by `.mintignore` are completely removed from your site and cannot be accessed by URL.
+</Note>
+
+## Pattern syntax
+
+The `.mintignore` file follows `.gitignore` syntax. Some common patterns include:
+
+| Pattern            | Description                                    |
+| ------------------ | ---------------------------------------------- |
+| `drafts/`          | Excludes the entire `drafts` directory         |
+| `*.draft.mdx`      | Excludes all files ending in `.draft.mdx`      |
+| `private-notes.md` | Excludes a specific file                       |
+| `**/internal/**`   | Excludes any `internal` directory at any level |
+| `!important.mdx`   | Negates a previous pattern (includes the file) |