Update variables.md

Fixed a small typo in the example comment.

src/content/docs/references/docs/variables.md

@@ -15,9 +15,9 @@ int x;               // x = 0
 int y @noinit;       // y is explicitly undefined and must be assigned before use.
 
 AStruct foo;         // foo is implicitly zeroed
-AStruct bar = {};    // boo is explicitly zeroed
+AStruct bar = {};    // bar is explicitly zeroed
 AStruct baz @noinit; // baz is explicitly undefined
 ```
 
 Using a variable that is explicitly undefined before will trap or be initialized to a 
-specific value when compiling "safe" and is undefined behaviour in "fast" builds.
+specific value when compiling "safe" and is undefined behaviour in "fast" builds.