docs:fixed missing coma in docs (#394)

## Description

<!-- Provide a concise and descriptive summary of the changes
implemented in this PR. -->

### Type of change

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] Documentation update (improves or adds clarity to existing
documentation)

### Tested on

- [ ] iOS
- [ ] Android

### Testing instructions

<!-- Provide step-by-step instructions on how to test your changes.
Include setup details if necessary. -->

### Screenshots

<!-- Add screenshots here, if applicable -->

### Related issues

<!-- Link related issues here using #issue-number -->

### Checklist

- [ ] I have performed a self-review of my code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have updated the documentation accordingly
- [ ] My changes generate no new warnings

### Additional notes

<!-- Include any additional information, assumptions, or context that
reviewers might need to understand this PR. -->

---------

Co-authored-by: Mateusz Kopciński <mateusz.kopcinski@swmansnion.com>

Author: mkopcins

README.md

@@ -80,7 +80,7 @@ function MyComponent() {
 ```tsx
 const handleGenerate = async () => {
   const chat = [
-    { role: 'system', content: 'You are a helpful assistant' }
+    { role: 'system', content: 'You are a helpful assistant' },
     { role: 'user', content: 'What is the meaning of life?' }
   ];
 

docs/docs/natural-language-processing/useLLM.md

@@ -173,7 +173,7 @@ const llm = useLLM({
 
 const handleGenerate = async () => {
   const chat = [
-    { role: 'system' content: 'You are a helpful assistant' },
+    { role: 'system', content: 'You are a helpful assistant' },
     { role: 'user', content: 'Hi!' },
     { role: 'assistant', content: 'Hi!, how can I help you?'},
     { role: 'user', content: 'What is the meaning of life?' },
@@ -230,8 +230,14 @@ const llm = useLLM({
 
 const handleGenerate = async () => {
   const chat = [
-    { role: 'system' content: `You are a helpful assistant. Current time and date: ${new Date().toString()}` }
-    { role: 'user', content: `Hi, what's the weather like in Cracow right now?` }
+    {
+      role: 'system',
+      content: `You are a helpful assistant. Current time and date: ${new Date().toString()}`,
+    },
+    {
+      role: 'user',
+      content: `Hi, what's the weather like in Cracow right now?`,
+    },
   ];
 
   // Chat completion

docs/versioned_docs/version-0.4.x/natural-language-processing/useLLM.md

@@ -173,7 +173,7 @@ const llm = useLLM({
 
 const handleGenerate = async () => {
   const chat = [
-    { role: 'system' content: 'You are a helpful assistant' },
+    { role: 'system', content: 'You are a helpful assistant' },
     { role: 'user', content: 'Hi!' },
     { role: 'assistant', content: 'Hi!, how can I help you?'},
     { role: 'user', content: 'What is the meaning of life?' },
@@ -230,8 +230,14 @@ const llm = useLLM({
 
 const handleGenerate = async () => {
   const chat = [
-    { role: 'system' content: `You are a helpful assistant. Current time and date: ${new Date().toString()}` }
-    { role: 'user', content: `Hi, what's the weather like in Cracow right now?` }
+    {
+      role: 'system',
+      content: `You are a helpful assistant. Current time and date: ${new Date().toString()}`,
+    },
+    {
+      role: 'user',
+      content: `Hi, what's the weather like in Cracow right now?`,
+    },
   ];
 
   // Chat completion