Fix small grammar issues in ms08_067 and ms17_010

Also includes very small changes to improve punctuation consistency
within CONTRIBUTING.md

Author: d1str0

CONTRIBUTING.md

@@ -45,8 +45,8 @@ and Metasploit's [Common Coding Mistakes].
 * **Do** specify a descriptive title to make searching for your pull request easier.
 * **Do** include [console output], especially for witnessable effects in `msfconsole`.
 * **Do** list [verification steps] so your code is testable.
-* **Do** [reference associated issues] in your pull request description
-* **Do** write [release notes] once a pull request is landed
+* **Do** [reference associated issues] in your pull request description.
+* **Do** write [release notes] once a pull request is landed.
 * **Don't** leave your pull request description blank.
 * **Don't** abandon your pull request. Being responsive helps us land your code faster.
 
@@ -58,8 +58,8 @@ Pull requests [PR#2940] and [PR#3043] are a couple good examples to follow.
   - It would be even better to set up `msftidy.rb` as a [pre-commit hook].
 * **Do** use the many module mixin [API]s. Wheel improvements are welcome; wheel reinventions, not so much.
 * **Don't** include more than one module per pull request.
-* **Do** include instructions on how to setup the vulnerable environment or software
-* **Do** include [Module Documentation](https://github.com/rapid7/metasploit-framework/wiki/Generating-Module-Documentation) showing sample run-throughs
+* **Do** include instructions on how to setup the vulnerable environment or software.
+* **Do** include [Module Documentation](https://github.com/rapid7/metasploit-framework/wiki/Generating-Module-Documentation) showing sample run-throughs.
 
 
 

documentation/modules/exploit/windows/smb/ms08_067_netapi.md

@@ -1,7 +1,7 @@
 ms08_067_netapi is one of the most popular remote exploits against Microsoft Windows. It is
-considered a reliable exploit, and allows you to gain access as SYSTEM - the highest Windows
-privilege. In modern day penetration test, this exploit would most likely be used in an internal
-environment, and not so much from external due to the likelihood of a firewall.
+considered a reliable exploit and allows you to gain access as SYSTEM - the highest Windows
+privilege. In modern day penetration tests, this exploit would most likely be used in an internal
+environment and not so much from external due to the likelihood of a firewall.
 
 The check command of ms08_067_netapi is also highly accurate, because it is actually testing the
 vulnerable code path, not just passively.
@@ -15,7 +15,7 @@ This exploit works against a vulnerable SMB service from one of these Windows sy
 * Windows XP
 * Windows 2003
 
-To reliability determine whether the machine is vulnerable, you will have to either examine
+To reliably determine whether the machine is vulnerable, you will have to either examine
 the system's patch level, or use a vulnerability check.
 
 ## Verification Steps

documentation/modules/exploit/windows/smb/ms17_010_eternalblue.md

@@ -1,7 +1,7 @@
 ms17_010_eternalblue is a remote exploit against Microsoft Windows, originally written by the
 Equation Group (NSA) and leaked by Shadow Brokers (an unknown hacking entity). It is
-considered a reliable exploit, and allows you to gain access not only as SYSTEM - the highest Windows
-user mode privilege, but also full control of the kernel in ring 0. In modern day penetration test,
+considered a reliable exploit and allows you to gain access not only as SYSTEM - the highest Windows
+user mode privilege, but also full control of the kernel in ring 0. In modern day penetration tests,
 this exploit can be found in internal and external environments.
 
 As far as remote kernel exploits go, this one is highly reliable and safe to use.