Tweak logo ASCII art for markdown rendering

This adjusts Unicode character selection and spacing to ensure the ASCII
art displays correctly in both terminal and web browser environments,
accounting for variable line-height in different markdown renderers.

Author: jserv

README.md

@@ -1,5 +1,6 @@
 # Linmo: A Simple Multi-tasking Operating System Kernel
-```
+
+<pre style="line-height: 0.7; font-family: monospace; font-size: 11px; margin: 0; padding: 0; letter-spacing: 0;">
       ▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▖
       ▐██████████████
       ▐█████▜▆▆▛█████
@@ -16,7 +17,7 @@
   ▄███▇██▎ ▀▀▀▀▀▔ ▐█████▙▁              █▛▜▄ ▜█▀▜▉ █▎ ▕█▏ █▎▜▛▀▜▉▕█
   ▀▀▔▔▜▄▀▜▅▄▂▁▁▃▄▆▀▚▟▀▔▀▀▘              ▀▘ ▀▘ ▀▀▀▔ ▀   ▀  ▀  ▀▀▀▔ ▀
        ▝▀▆▄▃████▃▄▆▀▔
-```
+</pre>
 
 Linmo is a preemptive, multi-tasking operating system kernel built as an educational showcase for resource-constrained systems.
 It offers a lightweight environment where all tasks share a single address space,