Fix some comment typos.

These comments weren't updated when we went from 24.8 to 26.6.

freetype.go

@@ -157,7 +157,7 @@ func (c *Context) drawContour(ps []truetype.Point, dx, dy fixed.Int26_6) {
 
 // rasterize returns the advance width, glyph mask and integer-pixel offset
 // to render the given glyph at the given sub-pixel offsets.
-// The 24.8 fixed point arguments fx and fy must be in the range [0, 1).
+// The 26.6 fixed point arguments fx and fy must be in the range [0, 1).
 func (c *Context) rasterize(glyph truetype.Index, fx, fy fixed.Int26_6) (
 	fixed.Int26_6, *image.Alpha, image.Point, error) {
 

raster/raster.go

@@ -116,7 +116,7 @@ func (r *Rasterizer) setCell(xi, yi int) {
 }
 
 // scan accumulates area/coverage for the yi'th scanline, going from
-// x0 to x1 in the horizontal direction (in 24.8 fixed point co-ordinates)
+// x0 to x1 in the horizontal direction (in 26.6 fixed point co-ordinates)
 // and from y0f to y1f fractional vertical units within that scanline.
 func (r *Rasterizer) scan(yi int, x0, y0f, x1, y1f fixed.Int26_6) {
 	// Break the 26.6 fixed point X co-ordinates into integral and fractional parts.