fix(docs): update for zipline 3.7.8

docs/getting-started/installation.md

@@ -9,7 +9,7 @@ There has not been an official release of PyZipline on PyPi yet, meaning these i
     type: warning
     attrs: {class: annotate}
 **Please make sure to install the matching version of PyZipline for your Zipline version!**  
-This documentation assumes you are using Zipline `3.7.7`.  
+This documentation assumes you are using Zipline `3.7.8`.  
 If you are not, please see [Versioning](./versioning.md) for a list of supported versions.  
 If you're on [Zipline's `trunk` version](https://github.com/diced/zipline/tree/trunk), use `*` to get the latest versions of PyZipline. (1)
 ///

docs/getting-started/versioning.md

@@ -4,4 +4,4 @@ Below is a table containing versions of Zipline, alongside their respective PyZi
 
 | PyZipline Versions | Zipline Versions |         Supported        |       Security Fixes      |
 | :----------------: | :--------------: | :----------------------: | :-----------------------: |
-| `0.1.0`            | `3.7.7`          | :white_check_mark:       | :white_check_mark:        |
+| `0.1.0`            | `3.7.8`          | :white_check_mark:       | :white_check_mark:        |