docs: add missing stdint includes

PR-URL: #2728
Ref: #2726 (review)
Co-authored-by: Athan Reines <[email protected]>
Reviewed-by: Athan Reines <[email protected]> 
Signed-off-by: Athan Reines <[email protected]>

Author: gunjjoshi

Diff for: lib/node_modules/@stdlib/math/base/napi/binary/README.md

@@ -621,6 +621,8 @@ When used, this macro should be used **instead of** `NAPI_MODULE`. The macro inc
 Macro for registering a Node-API module exporting an interface for invoking a binary function accepting and returning signed 32-bit integers.
 
 ```c
+#include <stdint.h>
+
 static int32_t add( const int32_t x, const int32_t y ) {
     return x + y;
 }
@@ -642,6 +644,8 @@ When used, this macro should be used **instead of** `NAPI_MODULE`. The macro inc
 Macro for registering a Node-API module exporting an interface for invoking a binary function accepting signed 32-bit integers and returning a double-precision floating-point number.
 
 ```c
+#include <stdint.h>
+
 static double add( const int32_t x, const int32_t y ) {
     return x + y;
 }
@@ -951,7 +955,7 @@ static double fcn( const int64_t x, const int64_t y ) {
 // ...
 
 // Register a Node-API module:
-STDLIB_MATH_BASE_NAPI_MODULE_II_D( fcn );
+STDLIB_MATH_BASE_NAPI_MODULE_LL_D( fcn );
 ```
 
 The macro expects the following arguments:

Diff for: lib/node_modules/@stdlib/math/base/napi/binary/include/stdlib/math/base/napi/binary.h

@@ -70,6 +70,8 @@
 * @param fcn   binary function
 *
 * @example
+* #include <stdint.h>
+*
 * static int_32 add( const int_32 x, const int_32 y ) {
 *     return x + y;
 * }
@@ -110,6 +112,8 @@
 * @param fcn   binary function
 *
 * @example
+* #include <stdint.h>
+*
 * static double add( const int_32 x, const int_32 y ) {
 *     return x + y;
 * }