I have created a text layer in Photoshop. The corners of the text have jagged edges, how can I display my text without the jagged edges?
From looking at the example you linked to, it looks like the zoom level in Photoshop is set to more than 100%, which will make the pixels visible. Set your zoom to 100% instead. Don't zoom in on raster images if you don't want to see the pixels. If you want to increase the size of the font, choose a larger font size.
Example showing text at 100%, and pixelization when zoomed in.
If the above isn't your problem, then another thing to check is the anti-aliasing option in the tool options for the text tool. Make sure it is set to something other than "none". Try the different settings.
Location of the anti-aliasing options: