Fixing more grammatical issues.

Misc/contribute.md

@@ -293,7 +293,7 @@ $ git pull upstream master
 
 After this my local repository with the Linux kernel source code is synced with the [mainline](https://github.com/torvalds/linux) repository. Now we can make some changes in the source code. As I already wrote, I have no advice for you where you can start and what `TODO` in the Linux kernel. But the best place for newbies is `staging` tree. In other words the set of drivers from the [drivers/staging](https://github.com/torvalds/linux/tree/master/drivers/staging). The maintainer of the `staging` tree is [Greg Kroah-Hartman](https://en.wikipedia.org/wiki/Greg_Kroah-Hartman) and the `staging` tree is that place where your trivial patch can be accepted. Let's look on a simple example that describes how to generate patch, check it and send to the [Linux kernel mail listing](https://lkml.org/).
 
-If we will look on the driver for the [Digi International EPCA PCI](https://github.com/torvalds/linux/tree/master/drivers/staging/dgap) based devices, we will see the `dgap_sindex` function on line 295:
+If we will look in the driver for the [Digi International EPCA PCI](https://github.com/torvalds/linux/tree/master/drivers/staging/dgap) based devices, we will see the `dgap_sindex` function on line 295:
 
 ```C
 static char *dgap_sindex(char *string, char *group)
@@ -314,7 +314,7 @@ static char *dgap_sindex(char *string, char *group)
 }
 ```
 
-This function looks for a match of any character in the group, and returns that position. During research of source code of the Linux kernel, I have noted that [lib/string.c](https://github.com/torvalds/linux/blob/master/lib/string.c#L473) source code file contains implementation of the `strpbrk` function that does the same that `dgap_sinidex`. It is not a good idea to use a custom implementation of a function that already exists. So we can remove the `dgap_sindex` function from the [drivers/staging/dgap/dgap.c](https://github.com/torvalds/linux/blob/master/drivers/staging/dgap/dgap.c) source code file and use the `strpbrk` instead.
+This function looks for a match of any character in the group and returns that position. During research of source code of the Linux kernel, I have noted that the [lib/string.c](https://github.com/torvalds/linux/blob/master/lib/string.c#L473) source code file contains the implementation of the `strpbrk` function that does the same thing as `dgap_sinidex`. It is not a good idea to use a custom implementation of a function that already exists, so we can remove the `dgap_sindex` function from the [drivers/staging/dgap/dgap.c](https://github.com/torvalds/linux/blob/master/drivers/staging/dgap/dgap.c) source code file and use the `strpbrk` instead.
 
 First of all let's create new `git` branch based on the current master that synced with the Linux kernel mainline repo: