fix(matter_docs): typo

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

Author: SuGlider

docs/en/matter/matter.rst

@@ -25,7 +25,7 @@ Before uploading any Matter example sketch, it is necessary to configure the Ard
 
   .. figure:: ../../_static/matter_partition_scheme.png
       :align: center
-      :alt: "Partition Scheme: Huge APP (3MB No OTA/1MB SPIFFS)"" Arduino IDE menu option
+      :alt: "Partition Scheme: Huge APP (3MB No OTA/1MB SPIFFS)" Arduino IDE menu option
       :figclass: align-center
 
 2. **Erase Flash**: Enable **"Erase All Flash Before Sketch Upload"** option from **Tools** menu.