docs(Mountain): Standardize README badge label casing and download URL

Harmonize badge labels to singular form ("Update", "Issue", "Download") across all shields.io badges in the README header. Fix the GitHub downloads badge URL to use the `/total` route suffix for accurate download count aggregation.

Consistent singular labels improve readability and match the project's concise naming convention.

Author: NikolaRHristov

README.md

@@ -5,17 +5,17 @@
 		<td>
 			<a href="https://GitHub.Com/CodeEditorLand/Mountain" target="_blank">
 				<picture>
-					<source media="(prefers-color-scheme: dark)" srcset="https://img.shields.io/github/last-commit/CodeEditorLand/Mountain?label=Last-commit&color=black&labelColor=black&logoColor=white&logoWidth=0" />
-					<source media="(prefers-color-scheme: light)" srcset="https://img.shields.io/github/last-commit/CodeEditorLand/Mountain?label=Last-commit&color=white&labelColor=white&logoColor=black&logoWidth=0" />
-					<img src="https://img.shields.io/github/last-commit/CodeEditorLand/Mountain?label=Last-commit&color=black&labelColor=black&logoColor=white&logoWidth=0" alt="Last-commit" title="Last-commit" />
+					<source media="(prefers-color-scheme: dark)" srcset="https://img.shields.io/github/last-commit/CodeEditorLand/Mountain?label=Update&color=black&labelColor=black&logoColor=white&logoWidth=0" />
+					<source media="(prefers-color-scheme: light)" srcset="https://img.shields.io/github/last-commit/CodeEditorLand/Mountain?label=Update&color=white&labelColor=white&logoColor=black&logoWidth=0" />
+					<img src="https://img.shields.io/github/last-commit/CodeEditorLand/Mountain?label=Update&color=black&labelColor=black&logoColor=white&logoWidth=0" alt="Update" title="Update" />
 				</picture>
 			</a>
 			<br />
 			<a href="https://GitHub.Com/CodeEditorLand/Mountain" target="_blank">
 				<picture>
-					<source media="(prefers-color-scheme: dark)" srcset="https://img.shields.io/github/issues/CodeEditorLand/Mountain?label=Issues&color=black&labelColor=black&logoColor=white&logoWidth=0" />
-					<source media="(prefers-color-scheme: light)" srcset="https://img.shields.io/github/issues/CodeEditorLand/Mountain?label=Issues&color=white&labelColor=white&logoColor=black&logoWidth=0" />
-					<img src="https://img.shields.io/github/issues/CodeEditorLand/Mountain?label=Issues&color=black&labelColor=black&logoColor=white&logoWidth=0" alt="Issues" title="Issues" />
+					<source media="(prefers-color-scheme: dark)" srcset="https://img.shields.io/github/issues/CodeEditorLand/Mountain?label=Issue&color=black&labelColor=black&logoColor=white&logoWidth=0" />
+					<source media="(prefers-color-scheme: light)" srcset="https://img.shields.io/github/issues/CodeEditorLand/Mountain?label=Issue&color=white&labelColor=white&logoColor=black&logoWidth=0" />
+					<img src="https://img.shields.io/github/issues/CodeEditorLand/Mountain?label=Issue&color=black&labelColor=black&logoColor=white&logoWidth=0" alt="Issue" title="Issue" />
 				</picture>
 			</a>
 		</td>
@@ -30,9 +30,9 @@
 			<br />
 			<a href="https://GitHub.Com/CodeEditorLand/Mountain" target="_blank">
 				<picture>
-					<source media="(prefers-color-scheme: dark)" srcset="https://img.shields.io/github/downloads/CodeEditorLand/Mountain?label=Downloads&color=black&labelColor=black&logoColor=white&logoWidth=0" />
-					<source media="(prefers-color-scheme: light)" srcset="https://img.shields.io/github/downloads/CodeEditorLand/Mountain?label=Downloads&color=white&labelColor=white&logoColor=black&logoWidth=0" />
-					<img src="https://img.shields.io/github/downloads/CodeEditorLand/Mountain?label=Downloads&color=black&labelColor=black&logoColor=white&logoWidth=0" alt="Downloads" title="Downloads" />
+					<source media="(prefers-color-scheme: dark)" srcset="https://img.shields.io/github/downloads/CodeEditorLand/Mountain/total?label=Download&color=black&labelColor=black&logoColor=white&logoWidth=0" />
+					<source media="(prefers-color-scheme: light)" srcset="https://img.shields.io/github/downloads/CodeEditorLand/Mountain/total?label=Download&color=white&labelColor=white&logoColor=black&logoWidth=0" />
+					<img src="https://img.shields.io/github/downloads/CodeEditorLand/Mountain/total?label=Download&color=black&labelColor=black&logoColor=white&logoWidth=0" alt="Download" title="Download" />
 				</picture>
 			</a>
 		</td>