Fix some minor typos

diff --git a/README.txt b/README.txt
index 0fb67e5dc3bcd68b2eabb67bf1ab0edb43d3b979..4294c643af9bb9be5057a5d93b57b32e8ce208f4 100644 (file)
--- a/README.txt
+++ b/README.txt
@@ -39,7 +39,7 @@ Photographed skyboxes need no extra source. Generated skyboxes using 3D
 software (or Terragen) need the project file.
 
 gfx/, textures/
-2D art generally need no extra source as it is perfectly editable on is own,
+2D art generally needs no extra source as it is perfectly editable on its own,
 and typically not generated. In case a layered source file (XCF, PSD) exists,
 providing that would be very nice, though.