Backport gh-2098 (#2107)

* Add Intel channel for installing wheels (#2098)

* Updated Changelog

---------

Co-authored-by: Evseniia Komarova <70146207+ekomarova@users.noreply.github.com>

Author: antonwolfy

CHANGELOG.md

@@ -108,6 +108,7 @@ In addition, this release completes implementation of `dpnp.fft` module and adds
 * Updated the test suit for `dpnp.fft` module [#2071](https://github.com/IntelPython/dpnp/pull/2071)
 * Reworked `dpnp.clip` implementation to align with Python Array API 2023.12 specification [#2048](https://github.com/IntelPython/dpnp/pull/2048)
 * Skipped outdated tests for `dpnp.linalg.solve` due to compatibility issues with NumPy 2.0 [#2074](https://github.com/IntelPython/dpnp/pull/2074)
+* Updated installation instructions [#2098](https://github.com/IntelPython/dpnp/pull/2098)
 
 ### Fixed
 

README.md

@@ -41,7 +41,7 @@ python scripts/build_locally.py
 ## Install Wheel Package via pip
 Install DPNP
 ```cmd
-python -m pip install dpnp
+python -m pip install --index-url https://software.repos.intel.com/python/pypi dpnp
 ```
 
 Set path to Performance Libraries in case of using venv or system Python:

doc/quick_start_guide.rst

@@ -44,7 +44,7 @@ You will need one of the commands below:
 
 * Conda: ``conda install dpnp -c https://software.repos.intel.com/python/conda/ -c conda-forge``
 
-* Pip: ``python -m pip install dpnp``
+* Pip: ``python -m pip install --index-url https://software.repos.intel.com/python/pypi dpnp``
 
 These commands install dpnp package along with its dependencies, including
 ``dpctl`` package with `Data Parallel Control Library`_ and all required