Fix remaining broken links

Author: timothycrosley

docs/quick_start/0.-try.md

@@ -32,7 +32,7 @@ import b, a
 <div id="outputEditor" class="editor">Loading...</div>
 <div>
 
-&nbsp;Configuration (Note: the below must follow JSON format). Full configuration guide is <a href="https://pycqa.github.io/isort/docs/configuration/options/">here</a>:
+&nbsp;Configuration (Note: the below must follow JSON format). Full configuration guide is <a href="https://pycqa.github.io/isort/docs/configuration/options">here</a>:
 
 <div id="configEditor" class="configurator">{"line_length": 80,
  "profile": "black",
@@ -47,4 +47,4 @@ import b, a
 <div style="clear:both;"></div>
 Like what you saw? Installing isort to use locally is as simple as `pip3 install isort`.
 
-[Click here for full installation instructions.](https://pycqa.github.io/isort/docs/quick_start/1.-install/)
+[Click here for full installation instructions.](https://pycqa.github.io/isort/docs/quick_start/1.-install)

docs/quick_start/2.-cli.md

@@ -3,7 +3,7 @@
 Once installed, `isort` exposes a command line utility for sorting, organizing, and formatting imports within Python and Cython source files.
 
 To verify the tool is installed correctly, run `isort` from the command line and you should be given the available commands and the version of isort installed.
-For a list of all CLI options type `isort --help` or view [the online configuration reference](https://pycqa.github.io/isort/docs/configuration/options/):
+For a list of all CLI options type `isort --help` or view [the online configuration reference](https://pycqa.github.io/isort/docs/configuration/options):
 
 <script id="asciicast-346599" src="https://asciinema.org/a/346599.js" async></script>
 

docs/quick_start/3.-api.md

@@ -19,4 +19,4 @@ Highlights include:
 - `isort.place_module` - Takes the name of a module as a string and returns the categorization determined for it.
 - `isort.place_module_with_reason` - Takes the name of a module as a string and returns the categorization determined for it and why that categorization was given.
 
-For a full definition of the API see the [API reference documentation](https://pycqa.github.io/isort/reference/isort/api/) or try `help(isort)` from an interactive interpreter.
+For a full definition of the API see the [API reference documentation](https://pycqa.github.io/isort/reference/isort/api) or try `help(isort)` from an interactive interpreter.

docs/upgrade_guides/5.0.0.md

@@ -5,7 +5,7 @@ This guide is meant to help migrate projects from using isort 4.x.x unto the 5.0
 
 Related documentation:
 
-* [isort 5.0.0 changelog](https://pycqa.github.io/isort/CHANGELOG/#500-penny-july-4-2020)
+* [isort 5.0.0 changelog](https://pycqa.github.io/isort/CHANGELOG#500-penny-july-4-2020)
 * [isort 5 release document](https://pycqa.github.io/isort/docs/major_releases/introducing_isort_5.html)
 
 !!! important - "If you use pre-commit remove seed-isort-config."

isort/exceptions.py

@@ -167,7 +167,7 @@ def __init__(self, unsupported_settings: Dict[str, Dict[str, str]]):
             "isort was provided settings that it doesn't support:\n\n"
             f"{errors}\n\n"
             "For a complete and up-to-date listing of supported settings see: "
-            "https://pycqa.github.io/isort/docs/configuration/options/.\n"
+            "https://pycqa.github.io/isort/docs/configuration/options.\n"
         )
         self.unsupported_settings = unsupported_settings