docs/HowToSetEnv.md: fix wrong path of installing Kconfig-frontend link
HowtoSetEnv.md and HowtoInstallKconfigFrontend.md are
in same directory depth, docs folder so that link should not have
"docs/" in a link.
@@ -39,7 +39,7 @@ cd ..
make menuconfig
```
-Refer [kconfig-frontend installation](docs/HowtoInstallKconfigFrontend.md) to use *menuconfig*.
+Refer [kconfig-frontend installation](HowtoInstallKconfigFrontend.md) to use *menuconfig*.
Finally, initiate build by make from *$TIZENRT_BASEDIR/os*.
```bash
