docs: update related packages sections

PR-URL: #7616

Reviewed-by: Philipp Burckhardt <pburckhardt@outlook.com>

Author: stdlib-bot

lib/node_modules/@stdlib/math/base/special/acosd/README.md

@@ -182,6 +182,7 @@ int main( void ) {
 ## See Also
 
 -   <span class="package-name">[`@stdlib/math/base/special/acos`][@stdlib/math/base/special/acos]</span><span class="delimiter">: </span><span class="description">compute the arccosine of a double-precision floating-point number.</span>
+-   <span class="package-name">[`@stdlib/math/base/special/acosdf`][@stdlib/math/base/special/acosdf]</span><span class="delimiter">: </span><span class="description">compute the arccosine (in degrees) of a single-precision floating-point number.</span>
 -   <span class="package-name">[`@stdlib/math/base/special/acosh`][@stdlib/math/base/special/acosh]</span><span class="delimiter">: </span><span class="description">compute the hyperbolic arccosine of a double-precision floating-point number.</span>
 -   <span class="package-name">[`@stdlib/math/base/special/asind`][@stdlib/math/base/special/asind]</span><span class="delimiter">: </span><span class="description">compute the arcsine (in degrees) of a double-precision floating-point number.</span>
 -   <span class="package-name">[`@stdlib/math/base/special/atand`][@stdlib/math/base/special/atand]</span><span class="delimiter">: </span><span class="description">compute the arctangent (in degrees) of a double-precision floating-point number.</span>
@@ -200,6 +201,8 @@ int main( void ) {
 
 [@stdlib/math/base/special/acos]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/math/base/special/acos
 
+[@stdlib/math/base/special/acosdf]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/math/base/special/acosdf
+
 [@stdlib/math/base/special/acosh]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/math/base/special/acosh
 
 [@stdlib/math/base/special/asind]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/math/base/special/asind