Update SecurityExploits/Chrome/v8/CVE-2021-30623/README.md

Co-authored-by: intrigus-lgtm <60750685+intrigus-lgtm@users.noreply.github.com>

Author: xcorail

SecurityExploits/Chrome/v8/CVE-2021-30623/README.md

@@ -24,7 +24,7 @@ $
 
 Shell code may need changing on other platforms.
 
-The exploit is very reliable, however, when testing, I notice that some offsets appear to be sensitive to small changes in the file (even adding comments may cause problem), which would cause the exploit to fail. This only happens when the file is modified and usually manifest itself with some garbage values of the addresses, for example:
+The exploit is very reliable, however, when testing, I notice that some offsets appear to be sensitive to small changes in the file (even adding comments may cause problem), which would cause the exploit to fail. This only happens when the file is modified and usually manifests itself with some garbage values of the addresses, for example:
 
 ```
 instance: 81d42dd