docs: improve code snippets with import

docs/classes/fetching-data.md

@@ -47,6 +47,11 @@ The name(s) (or the encoded name(s) as schema key) of the element(s) in the smar
 ### All-Keys Example
 
 ```javascript title="Receiving all keys from the schema"
+import ERC725 from '@erc725/erc725.js';
+import LSP3Schemas from '@erc725/erc725.js/schemas/LSP3ProfileMetadata.sjon';
+const universalProfileAddress = '0x0F4180da178ed1C71398a57ca8Cb177F69591f1f';
+
+const myErc725 = new ERC725(LSP3Schemas, universalProfileAddress);
 await myErc725.fetchData();
 /**
 [
@@ -88,6 +93,12 @@ await myErc725.fetchData();
 ### Single-Key Example
 
 ```javascript title="Receiving one key from the schema"
+import ERC725 from '@erc725/erc725.js';
+import LSP3Schemas from '@erc725/erc725.js/schemas/LSP3ProfileMetadata.sjon';
+const universalProfileAddress = '0x0F4180da178ed1C71398a57ca8Cb177F69591f1f';
+
+const myErc725 = new ERC725(LSP3Schemas, universalProfileAddress);
+
 await myErc725.fetchData('LSP3Profile');
 /**
 {
@@ -111,6 +122,12 @@ await myErc725.fetchData(['LSP1UniversalReceiverDelegate']);
 ### Multi-Keys / Dynamic-Keys Example
 
 ```javascript title="Receiving multiple keys from the schema"
+import ERC725 from '@erc725/erc725.js';
+import LSP3Schemas from '@erc725/erc725.js/schemas/LSP3ProfileMetadata.sjon';
+const universalProfileAddress = '0x0F4180da178ed1C71398a57ca8Cb177F69591f1f';
+
+const myErc725 = new ERC725(LSP3Schemas, universalProfileAddress);
+
 await myErc725.fetchData(['LSP3Profile', 'LSP1UniversalReceiverDelegate']);
 /**
 [
@@ -195,6 +212,12 @@ The name(s) (or the encoded name(s) as schema key) of the element(s) in the smar
 ### All-Keys Example
 
 ```javascript title="Receiving all keys from the schema"
+import ERC725 from '@erc725/erc725.js';
+import LSP3Schemas from '@erc725/erc725.js/schemas/LSP3ProfileMetadata.sjon';
+const universalProfileAddress = '0x0F4180da178ed1C71398a57ca8Cb177F69591f1f';
+
+const myErc725 = new ERC725(LSP3Schemas, universalProfileAddress);
+
 await myErc725.getData();
 /**
 [
@@ -242,6 +265,12 @@ await myErc725.getData();
 ### Single-Key Example
 
 ```javascript title="Receiving one key from the schema"
+import ERC725 from '@erc725/erc725.js';
+import LSP3Schemas from '@erc725/erc725.js/schemas/LSP3ProfileMetadata.sjon';
+const universalProfileAddress = '0x0F4180da178ed1C71398a57ca8Cb177F69591f1f';
+
+const myErc725 = new ERC725(LSP3Schemas, universalProfileAddress);
+
 await myErc725.getData('LSP3Profile');
 /**
 {
@@ -287,6 +316,12 @@ await myErc725.getData('LSP1UniversalReceiverDelegate');
 ### Multi-Key Example
 
 ```javascript title="Receiving multiple keys from the schema"
+import ERC725 from '@erc725/erc725.js';
+import LSP3Schemas from '@erc725/erc725.js/schemas/LSP3ProfileMetadata.sjon';
+const universalProfileAddress = '0x0F4180da178ed1C71398a57ca8Cb177F69591f1f';
+
+const myErc725 = new ERC725(LSP3Schemas, universalProfileAddress);
+
 await myErc725.getData(['LSP3Profile', 'LSP1UniversalReceiverDelegate']);
 /**
 [
@@ -313,14 +348,20 @@ await myErc725.getData(['LSP3Profile', 'LSP1UniversalReceiverDelegate']);
 ### Dynamic-Key Example
 
 ```javascript title="Receiving dynamic keys from the schema"
+import ERC725 from '@erc725/erc725.js';
+import LSP3Schemas from '@erc725/erc725.js/schemas/LSP3ProfileMetadata.sjon';
+const luksoUniversalProfile = '0x8363Cfe6c787218f0ADA0A4aBC289A8d9dfc2453';
+
+const myErc725 = new ERC725(LSP3Schemas, luksoUniversalProfile);
+
 await myErc725.getData({
   keyName: 'LSP12IssuedAssetsMap:<address>',
-  dynamicKeyParts: '0xcafecafecafecafecafecafecafecafecafecafe',
+  dynamicKeyParts: '0x592dCACb0A0d4b85eea0975992E42Bc543207F74', // asset address (KidSuper World Arts Path)
 });
 /**
 {
-  name: 'LSP12IssuedAssetsMap:cafecafecafecafecafecafecafecafecafecafe',
-  key: '0x74ac2555c10b9349e78f0000cafecafecafecafecafecafecafecafecafecafe',
+  name: 'LSP12IssuedAssetsMap:592dCACb0A0d4b85eea0975992E42Bc543207F74',
+  key: '0x74ac2555c10b9349e78f0000592dCACb0A0d4b85eea0975992E42Bc543207F74',
   value: '0x6b175474e89094c44da98b954eedeac495271d0f',
 }
 */