Fix #1492, correct README.md OSAL User's Guide links

README.md

@@ -7,7 +7,7 @@ This repository contains NASA's Operating System Abstraction Layer (OSAL), which
 
 This is a collection of abstraction APIs and associated framework to be located in the `osal` subdirectory of a cFS Mission Tree. The Core Flight System is bundled at <https://github.com/nasa/cFS>, which includes build and execution instructions.
 
-The autogenerated OSAL user's guide can be viewed at <https://github.com/nasa/cFS/blob/gh-pages/OSAL_Users_Guide.pdf>.
+The autogenerated OSAL user's guide can be viewed at <https://github.com/nasa/cFS/blob/gh-pages/osal-apiguide.pdf>.
 
 # Quick Start:
 
@@ -32,7 +32,7 @@ make test
 
 See the [Configuration Guide](https://github.com/nasa/osal/blob/main/docs/OSAL-Configuration-Guide.md) for more information.
 
-See also the autogenerated user's guide: <https://github.com/nasa/cFS/blob/gh-pages/OSAL_Users_Guide.pdf>
+See also the autogenerated user's guide: <https://github.com/nasa/cFS/blob/gh-pages/osal-apiguide.pdf>
 
 ## Known issues