fixed spelling mistake

either program or programme in English

Timers/timers-7.md

@@ -10,7 +10,7 @@ This is the seventh and last part [chapter](https://0xax.gitbooks.io/linux-insid
 * `gettimeofday`;
 * `nanosleep`.
 
-We will start from simple userspace [C](https://en.wikipedia.org/wiki/C_%28programming_language%29) programm and see all way from the call of the [standard library](https://en.wikipedia.org/wiki/Standard_library) function to the implementation of certain system call. As each [architecture](https://github.com/torvalds/linux/tree/master/arch) provides its own implementation of certain system call, we will consider only [x86_64](https://en.wikipedia.org/wiki/X86-64) specific implementations of system calls, as this book is related to this architecture.
+We will start from simple userspace [C](https://en.wikipedia.org/wiki/C_%28programming_language%29) program and see all way from the call of the [standard library](https://en.wikipedia.org/wiki/Standard_library) function to the implementation of certain system call. As each [architecture](https://github.com/torvalds/linux/tree/master/arch) provides its own implementation of certain system call, we will consider only [x86_64](https://en.wikipedia.org/wiki/X86-64) specific implementations of system calls, as this book is related to this architecture.
 
 Additionally we will not consider concept of system calls in this part, but only implementations of these three system calls in the Linux kernel. If you are interested in what is it a `system call`, there is special [chapter](https://0xax.gitbooks.io/linux-insides/content/SysCall/index.html) about this.