docs: update docs and fix signature

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Author: kgryte

lib/node_modules/@stdlib/lapack/base/xerbla/README.md

@@ -116,11 +116,11 @@ lapack_xerbla( "dlacpy", 1 )
 
 The function accepts the following arguments:
 
--   **name**: `[in] char*` name of routine.
--   **info**: `[in] LAPACK_INT` argument index.
+-   **name**: `[in] char*` name of routine (e.g., `dlacpy`).
+-   **info**: `[in] LAPACK_INT` error code (e.g., a negative argument index).
 
 ```c
-void lapack_xerbla( const char *name, const LAPACK_INT info );
+void lapack_xerbla( const char *name, LAPACK_INT info );
 ```
 
 </section>

lib/node_modules/@stdlib/lapack/base/xerbla/src/xerbla.c

@@ -24,7 +24,7 @@
 * Prints an error message.
 *
 * @param name    routine name (e.g., "dlacpy")
-* @param info    argument index
+* @param info    error code (e.g., a negative argument index)
 */
 void API_SUFFIX(lapack_xerbla)( const char *name, LAPACK_INT info ) {
 	if( info == LAPACK_WORK_MEMORY_ERROR ) {

lib/node_modules/@stdlib/lapack/base/xerbla/src/xerbla_lapacke.c

@@ -23,7 +23,7 @@
 * Prints an error message.
 *
 * @param name    routine name (e.g., "dlacpy")
-* @param info    argument index
+* @param info    error code (e.g., a negative argument index)
 */
 void API_SUFFIX(lapack_xerbla)( const char *name, LAPACK_INT info ) {
 	API_SUFFIX(LAPACKE_xerbla)( name, info );