docs: update contact (#226)

Author: zhyncs

blog/2023-05-10-leaderboard.md

@@ -58,7 +58,7 @@ td {text-align: left}
 
 ­
 
-If you want to see more models, please help us [add them](https://github.com/lm-sys/FastChat/blob/main/docs/arena.md#how-to-add-a-new-model) or [contact us](mailto:lmsysorg@gmail.com) by giving us API access.
+If you want to see more models, please help us [add them](https://github.com/lm-sys/FastChat/blob/main/docs/arena.md#how-to-add-a-new-model) or [contact us](mailto:lmsys.org@gmail.com) by giving us API access.
 
 ## Overview
 Thanks to the community's help, we have gathered 13k anonymous votes. Looking at the rankings and data collected from this leaderboard update, we have a few interesting findings.

blog/2023-05-25-leaderboard.md

@@ -72,7 +72,7 @@ The win fraction matrix of all model pairs is shown in Figure 1.
 <img src="/images/blog/leaderboard_week4/win_fraction_matrix.png" style="display:block; margin-top: auto; margin-left: auto; margin-right: auto; margin-bottom: auto;"></img>
 <p style="color:gray; text-align: center;">Figure 1: Fraction of Model A Wins for All Non-tied A vs. B Battles.</p>
 
-If you want to see more models, please help us [add them](https://github.com/lm-sys/FastChat/blob/main/docs/arena.md#how-to-add-a-new-model) or [contact us](mailto:lmsysorg@gmail.com) by giving us API access.
+If you want to see more models, please help us [add them](https://github.com/lm-sys/FastChat/blob/main/docs/arena.md#how-to-add-a-new-model) or [contact us](mailto:lmsys.org@gmail.com) by giving us API access.
 
 ## Overview
 

blog/2023-06-22-leaderboard.md

@@ -349,4 +349,4 @@ Below are readily available tools and code to run MT-bench and other metrics use
 - The [Arena Elo calculator](https://colab.research.google.com/drive/1RAWb22-PFNI-X1gPVzc927SGUdfr6nsR?usp=sharing).
 - The MMLU is based on [InstructEval](https://github.com/declare-lab/instruct-eval/blob/main/mmlu.py) and [Chain-of-Thought Hub](https://github.com/FranxYao/chain-of-thought-hub/tree/main/MMLU).
 
-If you wish to see more models on leaderboard, we invite you to [contribute to FastChat](https://github.com/lm-sys/FastChat/blob/main/docs/arena.md#how-to-add-a-new-model) or [contact us](mailto:lmsysorg@gmail.com) to provide us with API access.
+If you wish to see more models on leaderboard, we invite you to [contribute to FastChat](https://github.com/lm-sys/FastChat/blob/main/docs/arena.md#how-to-add-a-new-model) or [contact us](mailto:lmsys.org@gmail.com) to provide us with API access.

blog/2023-12-07-leaderboard.md

@@ -151,4 +151,4 @@ We plan to ship real-time leaderboard update, diving deeper into user prompt ana
 - Bradley-Terry model [lecture note](https://web.stanford.edu/class/archive/stats/stats200/stats200.1172/Lecture24.pdf), [paper](https://www.jstor.org/stable/2334029)
 - [Elo Uncovered: Robustness and Best Practices in Language Model Evaluation](https://arxiv.org/abs/2311.17295)
 
-If you wish to see more models on Arena leaderboard, we invite you to [contribute to FastChat](https://github.com/lm-sys/FastChat/blob/main/docs/arena.md#how-to-add-a-new-model) or [contact us](mailto:lmsysorg@gmail.com) to provide us with API access.
+If you wish to see more models on Arena leaderboard, we invite you to [contribute to FastChat](https://github.com/lm-sys/FastChat/blob/main/docs/arena.md#how-to-add-a-new-model) or [contact us](mailto:lmsys.org@gmail.com) to provide us with API access.