docs: update description

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

Author: kgryte

lib/node_modules/@stdlib/math/base/special/cosm1/package.json

@@ -122,7 +122,7 @@
       ],
       "output_policy": "real_floating_point_and_generic",
       "returns": {
-        "desc": "cosine minus one",
+        "desc": "result",
         "type": {
           "javascript": "number",
           "jsdoc": "number",