fix: grammatical mistakes in README.md (mrdoob#27024)

fixed some grammatical mistakes

Author: YashSalunke12

README.md

@@ -8,7 +8,7 @@
 
 #### JavaScript 3D library
 
-The aim of the project is to create an easy to use, lightweight, cross-browser, general purpose 3D library. The current builds only include a WebGL renderer but WebGPU (experimental), SVG and CSS3D renderers are also available as addons.
+The aim of the project is to create an easy-to-use, lightweight, cross-browser, general-purpose 3D library. The current builds only include a WebGL renderer but WebGPU (experimental), SVG and CSS3D renderers are also available as addons.
 
 [Examples](https://threejs.org/examples/) —
 [Docs](https://threejs.org/docs/) —
@@ -58,7 +58,7 @@ function animation( time ) {
 }
 ```
 
-If everything went well, you should see [this](https://jsfiddle.net/2nyxkmco/).
+If everything goes well, you should see [this](https://jsfiddle.net/2nyxkmco/).
 
 ### Cloning this repository