🧹 Update heading and logo for X-as-Code (#19)

* Update heading from 'Everything-as-Code' to 'X-as-Code'
* Image update
* crop pic

Author: ubmax

docs/_static/xac_logo.png

@@ -130,7 +130,7 @@
     "source_repository": "https://github.com/useblocks/x-as-code",
     "source_branch": "main",
     "source_directory": "docs",
-    "light_logo": "eac_logo.png",
-    "dark_logo": "eac_logo_dark.png",
+    "light_logo": "xac_logo.png",
+    "dark_logo": "xac_logo_dark.png",
 }
 html_css_files = ["custom.css"]

docs/_static/xac_logo_dark.png

@@ -13,7 +13,7 @@ Introduction
 
       .. div:: sd-font-weight-bold
 
-         Everything-as-Code (X as Code)
+         X-as-Code
 
       .. div:: sd-fs-5 sd-font-italic