fix: typescript fix getNetwork() return type

Author: PierreJeanjacquot

docs/classes/IExecNetworkModule.md

@@ -64,7 +64,7 @@ current IExecConfig
 
 ### getNetwork
 
-▸ **getNetwork**(): `Promise`<{ `chainId`: `number` ; `isNative`: `boolean`  }\>
+▸ **getNetwork**(): `Promise`<{ `chainId`: `string` ; `isNative`: `boolean`  }\>
 
 get info about the current iExec network
 
@@ -78,7 +78,7 @@ console.log(`working on chain ${chainId}, using native token: ${isNative}`);
 
 #### Returns
 
-`Promise`<{ `chainId`: `number` ; `isNative`: `boolean`  }\>
+`Promise`<{ `chainId`: `string` ; `isNative`: `boolean`  }\>
 
 ___
 

src/lib/IExecNetworkModule.d.ts

@@ -19,7 +19,7 @@ export default class IExecNetworkModule extends IExecModule {
    * console.log(`working on chain ${chainId}, using native token: ${isNative}`);
    * ```
    */
-  getNetwork(): Promise<{ chainId: number; isNative: boolean }>;
+  getNetwork(): Promise<{ chainId: string; isNative: boolean }>;
   /**
    * Create an IExecNetworkModule instance using an IExecConfig instance
    */