gh-40139: Translate constructions docs into Chinese
    
* Translate constructions docs into Chinese
* Fix some typos

### 📝 Checklist

<!-- Put an `x` in all the boxes that apply. -->

- [x] The title is concise and informative.
- [x] The description explains in detail what this PR is about.
- [ ] I have linked a relevant issue or discussion.
- [ ] I have created tests covering the changes.
- [ ] I have updated the documentation and checked the documentation
preview.

### ⌛ Dependencies

Follow PR #40049, Replace dead HTTP links in tutorial & constructions.
    
URL: #40139
Reported by: Fisher
Reviewer(s): Fisher, Travis Scrimshaw

Author: Release Manager

src/doc/en/constructions/algebraic_geometry.rst

@@ -38,7 +38,7 @@ algorithm. Here is an example of the syntax:
     sage: C.rational_points(algorithm="bn")
     [(0 : 0 : 1), (0 : 1 : 0), (2 : 2 : 1), (2 : 3 : 1), (3 : 1 : 1), (3 : 4 : 1)]
 
-The option ``algorithm="bn`` uses Sage's Singular interface and
+The option ``algorithm="bn"`` uses Sage's Singular interface and
 calls the ``brnoeth`` package.
 
 Here is another example using Sage's ``rational_points`` applied to

src/doc/en/constructions/interface_issues.rst

@@ -92,7 +92,7 @@ Sage and other computer algebra systems
 
 If ``foo`` is a Pari, GAP ( without ending semicolon), Singular,
 Maxima command, resp., enter ``gp("foo")`` for Pari,
-``libgap.eval("foo")}`` ``singular.eval("foo")``, ``maxima("foo")``, resp..
+``libgap.eval("foo")`` ``singular.eval("foo")``, ``maxima("foo")``, resp..
 These programs merely send the command string to the external
 program, execute it, and read the result back into Sage. Therefore,
 these will not work if the external program is not installed and in

src/doc/zh/a_tour_of_sage/index.rst

@@ -1,8 +1,8 @@
 .. _a-tour-of-sage:
 
-===============
+=============
 欢迎使用 Sage
-===============
+=============
 
 这是一篇关于如何使用 Sage 计算器的简短介绍。
 
@@ -22,7 +22,7 @@ Sage 的命令行提示符为 "``sage:``"。在实验以下示例时，你只需
     sage: 57.1^100
     4.60904368661396e175
 
-在 Sage 中计算一个 :math:`2 \times 2` 矩阵的逆。
+在 Sage 中计算一个 `2 \times 2` 矩阵的逆矩阵。
 
 ::
 
@@ -65,7 +65,7 @@ Sage 当然可以绘制各种常用函数。
 .. image:: sin_plot.*
 
 
-Sage 是一个非常强大的计算器。为了体验它的能力，首先我们创建一个 :math:`500 \times 500` 的随机数矩阵。
+Sage 是一个非常强大的计算器。为了体验它的能力，首先我们创建一个 `500 \times 500` 的随机数矩阵。
 
 ::
 
@@ -97,7 +97,7 @@ Sage 可以处理非常大的数字，甚至是数百万或数十亿位的数字
     sage: len(n.digits())
     5565709
 
-计算 :math:`\pi` 的前 100 位。
+计算 `\pi` 的前 100 位。
 
 ::