Correct link to license.txt

Author: yannikmesserli

README.md

@@ -92,4 +92,4 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 
-A copy of the license is available in the repository's [license.txt](icense.txt) file.
+A copy of the license is available in the repository's [license.txt](license.txt) file.