README.md: Replace meson_options.txt to meson.options

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I435ec56b82db633f61fb2c4ad1e7f0052720d3ff
diff --git a/README.md b/README.md
index 1510b60..6ced259 100644
--- a/README.md
+++ b/README.md
@@ -183,15 +183,14 @@
 figure. They must be adhering to the rules mentioned under the libpldm section
 above.
 
-Once the above is done a meson option has to be created in
-`libpldm/meson_options.txt` with its mapped compiler flag to enable conditional
-compilation.
+Once the above is done a meson option has to be created in `meson.options` with
+its mapped compiler flag to enable conditional compilation.
 
 For consistency would recommend using "oem-<oem_name>".
 
-The `libpldm/meson.build` and the corresponding source file(s) will need to
-incorporate the logic of adding its mapped compiler flag to allow conditional
-compilation of the code.
+The `meson.build` and the corresponding source file(s) will need to incorporate
+the logic of adding its mapped compiler flag to allow conditional compilation of
+the code.
 
 ## Requester APIs