change capitalization of Github to GitHub (#4789)

Matches https://github.com/features/copilot

Author: peterbecich

CONTRIBUTING.md

@@ -32,7 +32,7 @@ reliably would also make a huge difference.
 
 ## Pull requests
 
-* Read [how to properly contribute to open source projects on Github][2].
+* Read [how to properly contribute to open source projects on GitHub][2].
 * Use the same coding conventions as the rest of the project.
 * Make sure that the unit tests are passing locally via `make test` or via the CI.
 * Write [good commit messages][3].

clients/lsp-copilot.el

@@ -143,7 +143,7 @@ This function is automatically called during the client initialization if needed
           (cond
            ((s-equals-p status "AlreadySignedIn")
             (lsp--info "Copilot :: Already signed in as %s" user))
-           ((yes-or-no-p "Copilot requires you to log into your Github account. Proceed now?")
+           ((yes-or-no-p "Copilot requires you to log into your GitHub account. Proceed now?")
             (if (display-graphic-p)
                 (progn
                   (gui-set-selection 'CLIPBOARD user-code)

docs/lsp-clients.json

@@ -118,7 +118,7 @@
   },
   {
     "name": "copilot",
-    "full-name": "Github Copilot",
+    "full-name": "GitHub Copilot",
     "server-name": "copilot-language-server",
     "server-url": "https://www.npmjs.com/package/@github/copilot-language-server",
     "installation-url": "https://www.npmjs.com/package/@github/copilot-language-server",

mkdocs.yml

@@ -87,7 +87,7 @@ nav:
     - Fortran: page/lsp-fortran.md
     - Futhark: page/lsp-futhark.md
     - GDScript: page/lsp-gdscript.md
-    - Github Copilot: page/lsp-copilot.md
+    - GitHub Copilot: page/lsp-copilot.md
     - Gleam: page/lsp-gleam.md
     - GLSL: page/lsp-glsl.md
     - GNAT Project: page/lsp-gpr.md