Fix typo

zohairawan · zohairawan · commit c81977e9519a · 2025-07-15T02:03:15.000-07:00
diff --git a/src/operating_systems/abstractions.md b/src/operating_systems/abstractions.md
@@ -1,6 +1,6 @@
 # Abstractions
 
-The most important jobs of an operating system is to "abstract"
+The most important job of an operating system is to "abstract"
 over the hardware.
 
 You shouldn't need to know what brand network card you have in order
