docs: new descriptive first paragraph (#173)

* docs: new descriptive first paragraph

* Update README.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* fix: suppress ty type error for existing_template test assignment

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Co-authored-by: watermarkhu <18556882+watermarkhu@users.noreply.github.com>

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>

Author: 3 people

README.md

@@ -11,6 +11,8 @@
 [![pypi version](https://img.shields.io/pypi/v/mkdocstrings-matlab.svg)](https://pypi.org/project/mkdocstrings-matlab/)
 [![codecov](https://codecov.io/github/watermarkhu/mkdocstrings-matlab/graph/badge.svg?token=T2csKmj2o2)](https://codecov.io/github/watermarkhu/mkdocstrings-matlab)
 
+**A modern documentation framework for MATLAB.** Automatically generate beautiful documentation pages from your MATLAB code's comments and docstrings, harnessing the power of Markdown for advanced formatting.
+
 The MATLAB handler uses [maxx](https://github.com/watermarkhu/maxx) to collect documentation from MATLAB source code, which in turn uses [Tree-sitter](https://tree-sitter.github.io/tree-sitter/) and its [MATLAB parser](https://github.com/acristoffers/tree-sitter-matlab).
 
 You can install this handler by specifying it as a dependency:

src/mkdocstrings_handlers/matlab/handler.py

@@ -203,7 +203,7 @@ def update_env(self, config: Any) -> None:  # noqa: ARG002
             rendering.do_as_inheritance_diagram_section
         )
         self.env.globals["AutorefsHook"] = rendering.AutorefsHook  # ty: ignore[invalid-assignment]
-        self.env.tests["existing_template"] = lambda template_name: (
+        self.env.tests["existing_template"] = lambda template_name: (  # ty: ignore[invalid-assignment]
             template_name in self.env.list_templates()
         )
         # The following is required since in MATLAB there is a concept called namespace