docs: fix description

Signed-off-by: Athan <[email protected]>

Author: kgryte

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

@@ -20,7 +20,7 @@ limitations under the License.
 
 # roundsd
 
-> Rounds a double-precision floating-point number to the nearest value with `n` significant figures.
+> Round a double-precision floating-point number to the nearest value with `n` significant figures.
 
 <section class="usage">