Sync HIP documentation leftover (#1597)

* Sync HIP documentation leftover

* Update HIP docs environment.yaml and doxyfile

projects/hip/docs/doxygen/Doxyfile

@@ -834,7 +834,7 @@ INPUT                  = ../../include/hip \
                          ../../../clr/hipamd/include/hip/amd_detail/amd_hip_gl_interop.h \
                          ../../../clr/hipamd/include/hip/amd_detail/amd_surface_functions.h \
                          ../../../clr/hipamd/include/hip/amd_detail/amd_hip_cooperative_groups.h \
-                         ../../../ROCR-Runtime/src/inc/hsa_ext_amd.h
+                         ../../../rocr-runtime/src/inc/hsa_ext_amd.h
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
@@ -1230,7 +1230,7 @@ HTML_FOOTER            = ../_doxygen/footer.html
 # obsolete.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_STYLESHEET        = ../_doxygen/stylesheet.css
+HTML_STYLESHEET        = 
 
 # The HTML_EXTRA_STYLESHEET tag can be used to specify additional user-defined
 # cascading style sheets that are included after the standard style sheets