Fix table of content and typo in INSTALL.md

INSTALL.md

@@ -30,6 +30,9 @@ To install Intel(R) Extension for Scikit-learn*, use one of the following scenar
   - [Prerequisites](#prerequisites)
   - [Configure the Build with Environment Variables](#configure-the-build-with-environment-variables)
   - [Build Intel(R) Extension for Scikit-learn](#build-intelr-extension-for-scikit-learn)
+- [Build from Sources with `conda-build`](#build-from-sources-with-conda-build)
+  - [Prerequisites for `conda-build`](#prerequisites-for-conda-build)
+  - [Build Intel(R) Extension for Scikit-learn with `conda-build`](#build-intelr-extension-for-scikit-learn-with-conda-build)
 - [Next Steps](#next-steps)
 
 > **_NOTE:_** Intel(R) Extension for Scikit-learn* is also available as a part of [Intel® AI Tools](https://www.intel.com/content/www/us/en/developer/tools/oneapi/ai-analytics-toolkit.html). If you already have it installed, you do not need to separately install the extension.
@@ -218,7 +221,7 @@ Intel(R) Extension for Scikit-learn* is easily built from the sources using only
 
 ### Prerequisites for `conda-build`
 
-* any `conda` distribution (`miniforge` is preferrable)
+* any `conda` distribution (`miniforge` is recommended)
 * `conda-build` and `conda-verify` installed in a conda environment
 * (Windows only) Microsoft Visual Studio* 2022
 * (optional) Intel(R) oneAPI DPC++/C++ Compiler