fix typo(was bored)

src/main/java/net/coderbot/iris/Iris.java

@@ -157,7 +157,7 @@ private static Optional<Path> loadExternalZipShaderpack(Path shaderpackPath) {
 			Path root = zipSystem.getRootDirectories().iterator().next();//should only be one root directory for a zip shaderpack
 
 			Path potentialShaderDir = zipSystem.getPath("shaders");
-			//if the shaders dir was immediatly found return it
+			//if the shaders dir was immediately found return it
 			//otherwise, manually search through each directory path until it ends with "shaders"
 			if (Files.exists(potentialShaderDir)) {
 				return Optional.of(potentialShaderDir);