docs: add malvikasharan as a contributor for ideas, and review (#563)

* docs: update README.md [skip ci]

* docs: update .all-contributorsrc [skip ci]

---------

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>

Author: allcontributors[bot]

.all-contributorsrc

@@ -978,6 +978,16 @@
         "doc",
         "translation"
       ]
+    },
+    {
+      "login": "malvikasharan",
+      "name": "Malvika Sharan",
+      "avatar_url": "https://avatars.githubusercontent.com/u/5370471?v=4",
+      "profile": "http://malvikasharan.github.io/",
+      "contributions": [
+        "ideas",
+        "review"
+      ]
     }
   ],
   "contributorsPerLine": 7,