small typo fix: added space separating two sentences

README.md

@@ -3,7 +3,7 @@ linux-insides
 
 A book-in-progress about the linux kernel and its insides.
 
-**The goal is simple** - to share my modest knowledge about the insides of the linux kernel and help people who are interested in linux kernel insides, and other low-level subject matter.Feel free to go through the book [Start here](https://github.com/0xAX/linux-insides/blob/master/SUMMARY.md)
+**The goal is simple** - to share my modest knowledge about the insides of the linux kernel and help people who are interested in linux kernel insides, and other low-level subject matter. Feel free to go through the book [Start here](https://github.com/0xAX/linux-insides/blob/master/SUMMARY.md)
 
 **Questions/Suggestions**: Feel free about any questions or suggestions by pinging me at twitter [@0xAX](https://twitter.com/0xAX), adding an [issue](https://github.com/0xAX/linux-insides/issues/new) or just drop me an [email](mailto:anotherworldofworld@gmail.com).