Just a small spelling mistake I found

Working-for-Web-(HTML5).md

@@ -29,7 +29,7 @@ Before compiling your game, raylib library **must be recompiled for HTML5**, gen
 
 * For Windows users :
 
-Before compiling raylib, make sure all paths to emscripten (`EMSDK_PATH`) and tools are correctly configured on `C:/raylib/raylib/src/Makefile`, you must verify [this lines](https://github.com/raysan5/raylib/blob/master/src/Makefile#L149).
+Before compiling raylib, make sure all paths to emscripten (`EMSDK_PATH`) and tools are correctly configured on `C:/raylib/raylib/src/Makefile`, you must verify [these lines](https://github.com/raysan5/raylib/blob/master/src/Makefile#L149).
 
 To compile raylib source code, just execute Notepad++ script: `raylib_makefile` and `SET PLATFORM=PLATFORM_WEB`. That script just calls the following `make` line (in case you're are working on a custom environment):