pharmacode2: Fix vertical alignment of default text

Author: terryburton

src/pharmacode2.ps.src

@@ -121,7 +121,7 @@ begin
     /sbs [encstr length 2 mul {spc} repeat]
     /txt txt
     /textxalign (center)
-    /textyoffset 4.0
+    /textyoffset -4.0
     /opt options
     >>