fix missing links

Author: hkong

README.md

@@ -6,7 +6,7 @@ This CVE project implements the `cve-core` common library containing the general
 
 ## Versioning
 
-The first version of this library is **version 2.0.0**.  This is because the capabilities of this library have already been in use in [cvelistV5](xxxxx), and to preserve the versioning of capabilities, we decided to start this library at 2.0.0.  See [the ChangeLog](./ChangeLog.md) for specific details.
+The first version of this library is **version 2.0.0**.  This is because the capabilities of this library have already been in use in [cvelistV5](https://github.com/CVEProject/cvelistV5), and to preserve the versioning of capabilities, we decided to start this library at 2.0.0.  See [the ChangeLog](./ChangeLog.md) for specific details.
 
 ## Usage
 
@@ -106,4 +106,4 @@ The version for this library is specified in the `package.json`'s `version` fiel
 See [`ChangeLog.md](./ChangeLog.md) for a full history of this project.
 
 ### Footnotes
-[^1]: To ensure compatability with DOS/Windows based operating systems, we have provided `./cves.bat` as an alternative for `./cves.sh`.
+[^1]: To ensure compatability with DOS/Windows based operating systems, we have provided `./cves.bat` as an alternative for `./cves.sh`.