Update README.md for ESM bundle v0.2.2

Author: stdlib-bot

README.md

@@ -42,7 +42,7 @@ limitations under the License.
 ## Usage
 
 ```javascript
-import toBinaryStringf from 'https://cdn.jsdelivr.net/gh/stdlib-js/number-float32-base-to-binary-string@esm/index.mjs';
+import toBinaryStringf from 'https://cdn.jsdelivr.net/gh/stdlib-js/number-float32-base-to-binary-string@v0.2.2-esm/index.mjs';
 ```
 
 #### toBinaryStringf( x )
@@ -116,7 +116,7 @@ import randu from 'https://cdn.jsdelivr.net/gh/stdlib-js/random-base-randu@esm/i
 import round from 'https://cdn.jsdelivr.net/gh/stdlib-js/math-base-special-round@esm/index.mjs';
 import pow from 'https://cdn.jsdelivr.net/gh/stdlib-js/math-base-special-pow@esm/index.mjs';
 import float64ToFloat32 from 'https://cdn.jsdelivr.net/gh/stdlib-js/number-float64-base-to-float32@esm/index.mjs';
-import toBinaryStringf from 'https://cdn.jsdelivr.net/gh/stdlib-js/number-float32-base-to-binary-string@esm/index.mjs';
+import toBinaryStringf from 'https://cdn.jsdelivr.net/gh/stdlib-js/number-float32-base-to-binary-string@v0.2.2-esm/index.mjs';
 
 var frac;
 var sign;