fix build errors

Author: brharrington

docs/asl/ref/call.md

@@ -29,7 +29,7 @@ This takes the list `(a)` and executes it as a program, pushing `a` onto the sta
 Executing a program to square the top stack item:
 
 @@@ atlas-example { hilite=:call }
-Before: /api/v1/graph?w=200&h=125&s=e-3h&e=2014-02-20T15:01&tz=US/Pacific&q=name,sps,:eq,:sum,(,:dup,:mul,)
+Before: /api/v1/graph?w=200&h=125&s=e-3h&e=2014-02-20T15:01&tz=US/Pacific&q=name,sps,:eq,:sum
 After: /api/v1/graph?w=200&h=125&s=e-3h&e=2014-02-20T15:01&tz=US/Pacific&q=name,sps,:eq,:sum,(,:dup,:mul,),:call
 @@@
 

docs/asl/ref/fcall.md

@@ -48,8 +48,8 @@ This example:
 Executing a stored function to square the top stack item:
 
 @@@ atlas-example { hilite=:fcall }
-Before: /api/v1/graph?w=200&h=125&s=e-3h&e=2014-02-20T15:01&tz=US/Pacific&q=square,(,dup,:mul,),:set,name,sps,:eq,:sum
-After: /api/v1/graph?w=200&h=125&s=e-3h&e=2014-02-20T15:01&tz=US/Pacific&q=square,(,dup,:mul,),:set,name,sps,:eq,:sum,square,:fcall
+Before: /api/v1/graph?w=200&h=125&s=e-3h&e=2014-02-20T15:01&tz=US/Pacific&q=square,(,:dup,:mul,),:set,name,sps,:eq,:sum
+After: /api/v1/graph?w=200&h=125&s=e-3h&e=2014-02-20T15:01&tz=US/Pacific&q=square,(,:dup,:mul,),:set,name,sps,:eq,:sum,square,:fcall
 @@@
 
 This stores the squaring program `(,:dup,:mul,)` in variable `square`, then calls it using

docs/asl/ref/head.md

@@ -28,7 +28,6 @@ This takes all the series grouped by cluster and keeps only the first 2 series i
 ## Related Operations
 
 * [:limit](limit.md) - Equivalent operation (`:head` is an alias for `:limit`)
-* [:tail](tail.md) - Take the last N series instead of the first N
 * [:sort](sort.md) - Order series before limiting (often used together)
 * [:by](by.md) - Group series (commonly used before limiting)
-* [:top-k](top-k.md) - Select top N based on values rather than position
+* [:topk](topk.md) - Select top N based on values rather than position

docs/asl/ref/median.md

@@ -53,4 +53,4 @@ name,requestLatency,:eq,(,50,),:percentiles
 
 [spectator]: ../../spectator/index.md
 [PercentileTimer]: ../../spectator/patterns/percentile-timer.md
-[PercentileDistributionSummary]: ../../spectator/patterns/percentile-dist-summary.md
+[PercentileDistributionSummary]: ../../spectator/core/meters/dist-summary.md

docs/asl/ref/percentiles-heatmap.md

@@ -57,6 +57,6 @@ Default: /api/v1/graph?w=200&h=125&s=e-3h&e=2014-02-20T15:01&tz=US/Pacific&q=nam
 
 [spectator]: ../../spectator/index.md
 [PercentileTimer]: ../../spectator/patterns/percentile-timer.md
-[PercentileDistributionSummary]: ../../spectator/patterns/percentile-dist-summary.md
+[PercentileDistributionSummary]: ../../spectator/core/meters/dist-summary.md
 
 Since: 1.8

docs/asl/ref/sample-count.md

@@ -35,7 +35,7 @@ The metrics must be instrumented using percentile timers or distribution summari
 collect histogram information:
 
 * **[PercentileTimer](../../spectator/patterns/percentile-timer.md)** - For timing measurements
-* **[PercentileDistributionSummary](../../spectator/patterns/percentile-dist-summary.md)** - For distribution measurements
+* **[PercentileDistributionSummary](../../spectator/core/meters/dist-summary.md)** - For distribution measurements
 
 ## Examples
 
@@ -61,4 +61,4 @@ name,requestLatency,:eq,1,10,:sample-count
 ## See Also
 
 * [Percentile Timer Pattern](../../spectator/patterns/percentile-timer.md) - Instrumentation for timing with histograms
-* [Percentile Distribution Summary Pattern](../../spectator/patterns/percentile-dist-summary.md) - Distribution measurement patterns
+* [Percentile Distribution Summary Pattern](../../spectator/core/meters/dist-summary.md) - Distribution measurement patterns