Fixes the wording and typos

Signed-off-by: Tao He <linzhu.ht@alibaba-inc.com>

CITATION.cff

@@ -9,7 +9,7 @@ authors:
     affiliation: University of Edinburgh
   - given-names: Tao
     family-names: He
-    affiliation: 'Alibaba Group '
+    affiliation: Alibaba Group
   - given-names: Longbin
     family-names: Lai
     affiliation: Alibaba Group
@@ -89,7 +89,7 @@ preferred-citation:
     affiliation: University of Edinburgh
   - given-names: Tao
     family-names: He
-    affiliation: 'Alibaba Group '
+    affiliation: Alibaba Group
   - given-names: Longbin
     family-names: Lai
     affiliation: Alibaba Group
@@ -138,4 +138,4 @@ preferred-citation:
   volume: 14
   number: 12
   publisher:
-    name: LDB Endowment
+    name: VLDB Endowment

README.md

@@ -415,7 +415,7 @@ GraphScope is released under [Apache License 2.0](https://www.apache.org/license
 - Wenfei Fan, Tao He, Longbin Lai, Xue Li, Yong Li, Zhao Li, Zhengping Qian, Chao Tian, Lei Wang, Jingbo Xu, Youyang Yao, Qiang Yin, Wenyuan Yu, Jingren Zhou, Diwen Zhu, Rong Zhu. [GraphScope: A Unified Engine For Big Graph Processing](http://vldb.org/pvldb/vol14/p2879-qian.pdf). The 47th International Conference on Very Large Data Bases (VLDB), industry, 2021.
 - Jingbo Xu, Zhanning Bai, Wenfei Fan, Longbin Lai, Xue Li, Zhao Li, Zhengping Qian, Lei Wang, Yanyan Wang, Wenyuan Yu, Jingren Zhou. [GraphScope: A One-Stop Large Graph Processing System](http://vldb.org/pvldb/vol14/p2703-xu.pdf). The 47th International Conference on Very Large Data Bases (VLDB), demo, 2021
 
-If you use this software, please cite our paper using the following metadata.
+If you use this software, please cite our paper using the following metadata:
 
 ```bibtex
 @article{fan2021graphscope,