docs: Fix syntax error in real-time ASR example (Issue #2720)

[SnakeEye-sudo]

Added documentation to fix syntax error in real-time speech recognition example.

[gemini-code-assist]

Summary of Changes

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This pull request introduces a new documentation file that meticulously details a critical syntax error fix for the total_chunk_num calculation found in real-time Automatic Speech Recognition (ASR) examples. The primary purpose of this change is to prevent SyntaxError exceptions, thereby enhancing the robustness and usability of the provided ASR example code by ensuring proper arithmetic evaluation.

Highlights

• Documentation Update: A new markdown file, examples/REALTIME_ASR_FIX.md, has been added to provide detailed documentation regarding a syntax error fix in real-time speech recognition examples.
• Syntax Error Correction: The pull request addresses a SyntaxError in the total_chunk_num calculation within real-time ASR examples by correcting mismatched parentheses, ensuring the example code runs correctly.

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[gemini-code-assist]

Code Review

This pull request only adds a markdown file to document a syntax error fix, but critically, it does not apply the fix to the actual code. To resolve issue #2720, the fix must be applied directly to the affected source code files. I have left comments on the new documentation file to highlight this and another minor inaccuracy. Please update this PR to include the necessary code changes, as it cannot be merged in its current state.

[gemini-code-assist]

This pull request cannot close issue #2720 as it only adds documentation about the fix and does not actually fix the syntax error in the code. The bug is still present in files like examples/industrial_data_pretraining/paraformer_streaming/demo.py. This is a blocking issue for this PR. Please update this PR to include the necessary code changes.

[gemini-code-assist]

The incorrect code snippet here is slightly different from what's in some of the affected files. For example, in examples/industrial_data_pretraining/paraformer_streaming/demo.py, the line is total_chunk_num = int(len((speech) - 1) / chunk_stride + 1). This has an extra pair of parentheses around speech, resulting in len(speech - 1), which would likely raise a TypeError. It would be good to ensure the documentation accurately reflects the code being fixed, and that all variants of the error are corrected in the code.