[doc] use lower-case for doc files

README.md

@@ -101,7 +101,7 @@ The Ginkgo OMP module has the following __additional__ requirements:
 *  _MinGW_
 
 In these environments, two problems can be encountered, the solution for which is described in the
-[windows section in INSTALL.md](doc/user-guide/INSTALL.md#building-ginkgo-in-windows):
+[windows section in install.md](doc/user-guide/install.md#building-ginkgo-in-windows):
 * `ld: error: export ordinal too large` needs the compilation flag `-O1`
 * `cc1plus.exe: out of memory allocating 65536 bytes` requires a modification of the environment
 
@@ -124,7 +124,7 @@ modules depending on your machine environment (present of CUDA, ...). You can
 also explicitly compile with the OpenMP, CUDA, HIP or DPC++(SYCL) modules enabled to
 run the examples with these executors.
 
-Please refer to the [Installation page](doc/user-guide/INSTALL.md) for more details.
+Please refer to the [Installation page](doc/user-guide/install.md) for more details.
 
 Tip: After installation, in your CMake project, Ginkgo can be added with `find_package(Ginkgo)` and the the target that is exported is `Ginkgo::ginkgo`.
 An example can be found in the [`test_install`](test/test_install/CMakeLists.txt).
@@ -144,7 +144,7 @@ Various examples are available for you to understand and play with Ginkgo within
 A unique feature of Ginkgo is the ability to run benchmarks and view your results
 with the help of the [Ginkgo Performance Explorer (GPE)](https://ginkgo-project.github.io/gpe/).
 
-More details about this can be found in the [BENCHMARKING.md page](doc/user-guide/BENCHMARKING.md)
+More details about this can be found in the [benchmarking.md page](doc/user-guide/benchmarking.md)
 
 # Bug reports and Support
 
@@ -161,7 +161,7 @@ to the project are added under this license.
 
 Depending on the configuration options used when building Ginkgo, third party
 software may be pulled as additional dependencies, which have their own
-licensing conditions. Refer to [ABOUT-LICENSING.md](doc/user-guide/ABOUT-LICENSING.md) for
+licensing conditions. Refer to [about-licensing.md](doc/user-guide/about-licensing.md) for
 details.
 
 # Contributing to Ginkgo
@@ -185,7 +185,7 @@ license, as specified in the repository's LICENSE file.
 
 #### Contribution Guidelines
 
-When contributing to Ginkgo, to ease the review process, please follow the guidelines mentioned in [CONTRIBUTING.md](doc/user-guide/CONTRIBUTING.md).
+When contributing to Ginkgo, to ease the review process, please follow the guidelines mentioned in [contributing.md](doc/user-guide/contributing.md).
 
 It also contains other general recommendations such as writing proper commit messages, understanding Ginkgo's library design, relevant C++ information etc.
 
@@ -215,5 +215,4 @@ pages = {2:1--2:33}
 }
 ```
 
-For more information on topical subjects, please refer to the [CITING.md
-page](doc/user-guide/CITING.md).
+For more information on topical subjects, please refer to the [citing.md page](doc/user-guide/citing.md).

doc/index.md

@@ -1,7 +1,7 @@
 # User Guide
 
 This is the main page for the Ginkgo library user documentation. The repository is hosted on [github](https://github.com/ginkgo-project/ginkgo). 
-Documentation on aspects such as the build system, can be found at the [install page](user-guide/INSTALL.md). 
+Documentation on aspects such as the build system, can be found at the [install page](user-guide/install.md). 
 The {doxy}`Examples` can help you get started with using Ginkgo.
 
 The Ginkgo library can be grouped into modules which form the basic building blocks of Ginkgo. The modules can be summarized as follows:
@@ -24,10 +24,10 @@ The Ginkgo library can be grouped into modules which form the basic building blo
 
 Tutorial <https://github.com/ginkgo-project/ginkgo/wiki/Tutorial:-Building-a-Poisson-Solver>
 Examples <_doxygen/html/Examples.html#https://>
-Publications <user-guide/CITING>
-user-guide/CONTRIBUTING
-Using Ginkgo <user-guide/INSTALL>
-user-guide/ABOUT-LICENSING
+Publications <user-guide/citing>
+user-guide/contributing
+Using Ginkgo <user-guide/install>
+user-guide/about-licensing
 API <_doxygen/html/index.html#https://>
 :::
 

doc/user-guide/ABOUT-LICENSING.md → doc/user-guide/about-licensing.md

@@ -230,7 +230,7 @@ For detecting the HWLOC library, we used a modified version of the FindHWLOC.cma
 __NOTE:__ Some of the options that pull additional software when compiling
 Ginkgo are ON by default, and have to be disabled manually to prevent
 third-party licensing. Refer to the [Installation section in
-INSTALL.md](INSTALL.md#building) for more details.
+install.md](install.md#building) for more details.
 
 
 When using testing with MPI switched on, the gtest-mpi-listener header only library is used for testing MPI functionality. The repository is licensed triple licensed under BSD-3, MIT and Apache 2.0. The License duplicated below. More details on the License and the library are [available on github](https://github.com/LLNL/gtest-mpi-listener)

doc/user-guide/INSTALL.md → doc/user-guide/install.md

@@ -251,6 +251,6 @@ An example can be found in the [`test_install`](../../test/test_install/CMakeLis
 :::{toctree}
 :hidden:
 self
-TESTING
-BENCHMARKING
+testing
+benchmarking
 :::