Follow spelling change to atomic prefix ops.

Author: jnthn

doc/Type/atomicint.pod6

@@ -210,9 +210,9 @@ It would be legal for a compiler to observe that C<$i> is not updated in the
 loop, and so lift the read out of the loop, thus causing the program to never
 terminate.
 
-=head2 prefix ⚛++
+=head2 prefix ++⚛
 
-    multi sub prefix:<⚛++>(atomcint $ is rw)
+    multi sub prefix:<++⚛>(atomcint $ is rw)
 
 Performs an atomic increment on a native integer. This will be performed using
 hardware-provided atomic operations. Since the operation is atomic, it is safe
@@ -228,9 +228,9 @@ hardware-provided atomic operations. Since the operation is atomic, it is safe
 to use without acquiring a lock. Returns the value as seen before incrementing
 it. Overflow will wrap around silently.
 
-=head2 prefix ⚛--
+=head2 prefix --⚛
 
-    multi sub prefix:<⚛-->(atomcint $ is rw)
+    multi sub prefix:<--⚛>(atomcint $ is rw)
 
 Performs an atomic decrement on a native integer. This will be performed using
 hardware-provided atomic operations. Since the operation is atomic, it is safe