Fix references to "telnet", it should be "telnetsrv". Otherwise build_oai...

Fix references to "telnet", it should be "telnetsrv". Otherwise build_oai fails with a very cryptic error message.

doc/BUILD.md

@@ -165,18 +165,18 @@ After completing the build, the binaries are available in the `cmake_targets/ran
 ## Building Optional Binaries
 
 There are a number of optional libraries that can be built in support of the
-RAN, such as telnet, scopes, offloading libraries, etc.
+RAN, such as telnetsrv, scopes, offloading libraries, etc.
 
 Using the help option of the build script you can get the list of available optional libraries.
 
 ```bash
 ./build_oai --build-lib all # build all
-./build_oai --build-lib telnet  # build only telnet
-./build_oai --build-lib "telnet enbscope uescope nrscope nrqtscope"
-./build_oai --build-lib telnet --build-lib nrqtscope
+./build_oai --build-lib telnetsrv  # build only telnetsrv
+./build_oai --build-lib "telnetsrv enbscope uescope nrscope nrqtscope"
+./build_oai --build-lib telnetsrv --build-lib nrqtscope
 ```
 
-The following libraries are build in CI and should always work: `telnet`,
+The following libraries are build in CI and should always work: `telnetsrv`,
 `enbscope`, `uescope`, `nrscope`, `nrqtscope`.
 
 Some libraries have further dependencies and might not build on every system:
@@ -195,7 +195,7 @@ mkdir build && cd build
 cmake .. -GNinja && ninja nr-softmodem nr-uesoftmodem nr-cuup params_libconfig coding rfsimulator ldpc
 ```
 
-To build additional libraries, e.g., telnet, do the following:
+To build additional libraries, e.g., telnetsrv, do the following:
 ```bash
 cmake .. -GNinja -DENABLE_TELNETSRV=ON && ninja telnetsrv
 ```