Update tree-sitter-markdown's url and version

Author: dalugm

README.md

@@ -128,7 +128,7 @@ Once installed, evaluate `clojure-ts-mode.el` and you should be ready to go.
 - The [experimental](https://github.com/sogaiu/tree-sitter-clojure/tree/unstable-20250526) version Clojure grammar. This version includes a few
   improvements, which potentially will be promoted to a stable release (See [the
   discussion](https://github.com/sogaiu/tree-sitter-clojure/issues/65)). This grammar is required for proper work of `clojure-ts-mode`.
-- [markdown-inline](https://github.com/MDeiml/tree-sitter-markdown), which will be used for docstrings if available and if
+- [markdown-inline](https://github.com/tree-sitter-grammars/tree-sitter-markdown), which will be used for docstrings if available and if
   `clojure-ts-use-markdown-inline` is enabled.
 - [tree-sitter-regex](https://github.com/tree-sitter/tree-sitter-regex/releases/tag/v0.24.3), which will be used for regex literals if available and if
   `clojure-ts-use-regex-parser` is not `nil`.

clojure-ts-mode.el

@@ -3068,8 +3068,8 @@ all let bindings found along the way."
 (defconst clojure-ts-grammar-recipes
   '((clojure "https://github.com/sogaiu/tree-sitter-clojure.git"
              "unstable-20250526")
-    (markdown-inline "https://github.com/MDeiml/tree-sitter-markdown"
-                     "v0.4.1"
+    (markdown-inline "https://github.com/tree-sitter-grammars/tree-sitter-markdown"
+                     "v0.5.2"
                      "tree-sitter-markdown-inline/src")
     (regex "https://github.com/tree-sitter/tree-sitter-regex"
            "v0.24.3"))