Update words in DJ_SORA.md: open source to open-source (#237)

`open source` to `open-source`

docs/DJ_SORA.md

@@ -2,7 +2,7 @@ English | [中文页面](DJ_SORA_ZH.md)
 
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-Data is the key to the unprecedented development of large multi-modal models such as SORA. How to obtain and process data efficiently and scientifically faces new challenges! DJ-SORA aims to create a series of large-scale, high-quality open source multi-modal data sets to assist the open source community in data understanding and model training.
+Data is the key to the unprecedented development of large multi-modal models such as SORA. How to obtain and process data efficiently and scientifically faces new challenges! DJ-SORA aims to create a series of large-scale, high-quality open-source multi-modal data sets to assist the open-source community in data understanding and model training.
 
 DJ-SORA is based on Data-Juicer (including hundreds of dedicated video, image, audio, text and other multi-modal data processing [operators](Operators_ZH.md) and tools) to form a series of systematic and reusable Multimodal "data recipes" for analyzing, cleaning, and generating large-scale, high-quality multimodal data.