Fix errors with ingroup exposed by doxygen 1.10 (rapidsai#2079)

Allow docs to be built correctly with doxygen 1.10

Authors:
  - William Hicks (https://github.com/wphicks)

Approvers:
  - Corey J. Nolet (https://github.com/cjnolet)

URL: rapidsai#2079

cpp/include/raft/core/cublas_macros.hpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022-2023, NVIDIA CORPORATION.
+ * Copyright (c) 2022-2024, NVIDIA CORPORATION.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -33,7 +33,7 @@
 namespace raft {
 
 /**
- * @ingroup error_handling
+ * @addtogroup error_handling
  * @{
  */
 
@@ -76,7 +76,7 @@ inline const char* cublas_error_to_string(cublasStatus_t err)
 #undef _CUBLAS_ERR_TO_STR
 
 /**
- * @ingroup assertion
+ * @addtogroup assertion
  * @{
  */
 
@@ -135,4 +135,4 @@ inline const char* cublas_error_to_string(cublasStatus_t err)
 #define CUBLAS_CHECK_NO_THROW(call) RAFT_CUBLAS_TRY_NO_THROW(call)
 #endif
 
-#endif
+#endif

cpp/include/raft/linalg/add.cuh

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022-2023, NVIDIA CORPORATION.
+ * Copyright (c) 2022-2024, NVIDIA CORPORATION.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -29,7 +29,11 @@ namespace raft {
 namespace linalg {
 
 /**
- * @ingroup arithmetic
+ * @defgroup arithmetic Arithmetic functions
+ * @{
+ */
+
+/**
  * @brief Elementwise scalar add operation on the input buffer
  *
  * @tparam InT     input data-type. Also the data-type upon which the math ops
@@ -87,6 +91,8 @@ void addDevScalar(
   detail::addDevScalar(outDev, inDev, singleScalarDev, len, stream);
 }
 
+/** @} */  // end of group add
+
 /**
  * @defgroup add_dense Addition Arithmetic
  * @{
@@ -220,4 +226,4 @@ void add_scalar(raft::resources const& handle,
 };  // end namespace linalg
 };  // end namespace raft
 
-#endif
+#endif

cpp/include/raft/neighbors/nn_descent_types.hpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023, NVIDIA CORPORATION.
+ * Copyright (c) 2023-2024, NVIDIA CORPORATION.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -27,7 +27,7 @@
 
 namespace raft::neighbors::experimental::nn_descent {
 /**
- * @ingroup nn_descent
+ * @ingroup nn-descent
  * @{
  */