content: fix broken links for "zola check"

I intentionally pushed the last commit to check that "zola check" in the
wwtguide template was working! Just in case you thought I was slacking.

content/spice-kernels/index.md

@@ -5,8 +5,8 @@ weight = 700
 
 SPICE kernels are not trivial in their ease of use in their raw format and,
 thankfully, NASA provides
-[WebGeocalc](https://wgc.jpl.nasa.gov:8443/webgeocalc/#NewCalculation), a
-web-based GUI to assist in processing the desired data:
+[WebGeocalc](https://wgc.jpl.nasa.gov:8443/webgeocalc/), a web-based GUI to
+assist in processing the desired data:
 
 ![](spice-gui-empty.png)
 

content/traverse-trails/index.md

@@ -17,11 +17,11 @@ visualizations that are built into WWT. Expanding the **Earth** menu will show
 six children layers, including **Overlays**, the **Moon** and the **ISS**.
 Likewise for **Mars**, the only options are **Phobos and Deimos**.
 
-1. To create our own layer for Mars, we first need to ensure that the
-   WWT Excel Add-In is installed for your computer, which can be found
-   here: [http://www.layerscape.org/Home/ExcelAddInWelcome.](http://www.layerscape.org/Home/ExcelAddInWelcome)
-1. Curiosity traverse coordinates courtesy of Joe Knapp can be found at
-   [curiosityrover.com](http://curiosityrover.com/rovertrackfine.json).
+1. To create our own layer for Mars, we first need to ensure that the WWT
+   Excel Add-In is installed for your computer, which can be found here:
+   **FIXME UPDATE LINK**.
+1. Curiosity traverse coordinates courtesy of Joe Knapp used to be available
+   at `http://curiosityrover.com/rovertrackfine.json`. **FIXME NEW LINK?**
 1. Right-click and **Save As** to save the file `rovertrackfine.json`. Open
    the file with Microsoft Word and use **Replace** (Ctrl-H) to replace the
    following characters in the JSON file with nothing: `[`, `]`, `{`, `},`,

content/web-mapping-service/index.md

@@ -50,14 +50,8 @@ similar process would be used to add other mapping data for other planets.
 Here are some WMS sources to check out:
 
 - [NASA GSFC](http://svs.gsfc.nasa.gov/cgi-bin/wms)
-- [MBARI](http://odss.mbari.org/thredds/wms/ucsc/sst)
+- [MBARI](https://erddap.mbari.org/erddap/wms/)
 - [GIBS](http://map1.vis.earthdata.nasa.gov/twms-geo/twms.cgi)
 - [NEOWMS NASA SCI](http://neowms.sci.gsfc.nasa.gov/wms/wms)
-- [JPL NewMoon](http://onmoon.jpl.nasa.gov/wms.cgi)
-- [NASA OnMoon](http://onmoon.lmmp.nasa.gov/wms.cgi)
-- [NASA On Mars](http://OnMars.jpl.nasa.gov/wms.cgi)
-- [NASA WorldWind](http://data.worldwind.arc.nasa.gov/wms)
-- [Moon Modeling](http://onmoon.lmmp.nasa.gov/sites_a/wms.cgi)
-- [Moon Modeling 1](http://onmoon.lmmp.nasa.gov/sites/wms.cgi)
-- [NASA OnEarth WMS](http://onearth.jpl.nasa.gov/wms.cgi)
+- [NASA WorldWind](https://worldwind.arc.nasa.gov/)
 - [NASA Earth Observatory](http://neowms.sci.gsfc.nasa.gov/wms/wms)